/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 SequenceOfStatements --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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:21:18,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:21:18,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:21:18,170 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:21:18,170 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:21:18,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:21:18,181 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:21:18,184 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:21:18,187 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:21:18,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:21:18,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:21:18,191 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:21:18,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:21:18,194 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:21:18,196 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:21:18,196 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:21:18,201 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:21:18,202 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:21:18,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:21:18,205 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:21:18,207 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:21:18,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:21:18,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:21:18,209 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:21:18,211 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:21:18,211 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:21:18,212 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:21:18,213 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:21:18,213 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:21:18,214 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:21:18,214 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:21:18,215 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:21:18,215 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:21:18,216 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:21:18,217 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:21:18,217 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:21:18,218 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:21:18,218 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:21:18,218 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:21:18,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:21:18,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:21:18,223 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 [2020-10-14 04:21:18,247 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:21:18,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:21:18,248 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:21:18,249 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:21:18,249 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:21:18,249 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:21:18,249 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:21:18,250 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:21:18,250 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:21:18,250 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:21:18,250 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:21:18,250 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:21:18,251 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:21:18,251 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:21:18,251 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:21:18,251 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:21:18,251 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:21:18,252 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:21:18,252 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:21:18,252 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:21:18,252 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:21:18,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:21:18,252 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:21:18,253 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:21:18,253 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:21:18,253 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:21:18,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:21:18,253 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:21:18,254 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:21:18,254 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 -> SequenceOfStatements 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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:21:18,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:21:18,575 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:21:18,578 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:21:18,580 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:21:18,580 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:21:18,581 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label44.c [2020-10-14 04:21:18,638 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b58eccdfc/2b303036801b4efb903ca38c7586d51b/FLAG506ae5f21 [2020-10-14 04:21:19,399 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:21:19,400 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label44.c [2020-10-14 04:21:19,429 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b58eccdfc/2b303036801b4efb903ca38c7586d51b/FLAG506ae5f21 [2020-10-14 04:21:19,495 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b58eccdfc/2b303036801b4efb903ca38c7586d51b [2020-10-14 04:21:19,504 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:21:19,505 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:21:19,507 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:21:19,507 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:21:19,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:21:19,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:21:19" (1/1) ... [2020-10-14 04:21:19,515 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@726cde99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:21:19, skipping insertion in model container [2020-10-14 04:21:19,516 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:21:19" (1/1) ... [2020-10-14 04:21:19,524 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:21:19,637 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:21:21,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:21:21,310 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:21:21,809 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:21:21,838 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:21:21,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:21:21 WrapperNode [2020-10-14 04:21:21,840 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:21:21,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:21:21,842 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:21:21,842 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:21:21,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:21:21" (1/1) ... [2020-10-14 04:21:21,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:21:21" (1/1) ... [2020-10-14 04:21:21,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:21:21" (1/1) ... [2020-10-14 04:21:21,930 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:21:21" (1/1) ... [2020-10-14 04:21:22,032 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:21:21" (1/1) ... [2020-10-14 04:21:22,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:21:21" (1/1) ... [2020-10-14 04:21:22,079 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:21:21" (1/1) ... [2020-10-14 04:21:22,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:21:22,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:21:22,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:21:22,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:21:22,110 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:21:21" (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 [2020-10-14 04:21:22,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:21:22,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:21:22,193 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:21:22,193 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:21:22,193 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 04:21:22,193 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:21:22,194 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:21:22,195 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:21:22,195 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 04:21:22,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:21:22,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:21:22,195 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:21:22,196 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:21:22,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:21:22,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:21:28,537 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:21:28,537 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:21:28,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:21:28 BoogieIcfgContainer [2020-10-14 04:21:28,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:21:28,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:21:28,559 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:21:28,562 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:21:28,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:21:19" (1/3) ... [2020-10-14 04:21:28,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47968b86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:21:28, skipping insertion in model container [2020-10-14 04:21:28,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:21:21" (2/3) ... [2020-10-14 04:21:28,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47968b86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:21:28, skipping insertion in model container [2020-10-14 04:21:28,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:21:28" (3/3) ... [2020-10-14 04:21:28,567 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label44.c [2020-10-14 04:21:28,578 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:21:28,589 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:21:28,607 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:21:28,640 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:21:28,640 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:21:28,640 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:21:28,640 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:21:28,641 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:21:28,641 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:21:28,642 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:21:28,642 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:21:28,685 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2020-10-14 04:21:28,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 04:21:28,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:21:28,696 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] [2020-10-14 04:21:28,697 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:21:28,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:21:28,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1139178023, now seen corresponding path program 1 times [2020-10-14 04:21:28,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:21:28,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58211831] [2020-10-14 04:21:28,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:21:28,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:28,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:29,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:29,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 04:21:29,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:29,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-10-14 04:21:29,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:29,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:29,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:21:29,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:21:29,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 04:21:29,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 04:21:29,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:21:29,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:29,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:29,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:29,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:21:29,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:29,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 04:21:29,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:29,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:29,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:21:29,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:29,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:21:29,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:29,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:21:29,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58211831] [2020-10-14 04:21:29,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:21:29,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:21:29,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441140385] [2020-10-14 04:21:29,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:21:29,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:21:29,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:21:29,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:21:29,455 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 4 states. [2020-10-14 04:21:39,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:21:39,074 INFO L93 Difference]: Finished difference Result 2270 states and 4349 transitions. [2020-10-14 04:21:39,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:21:39,076 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-14 04:21:39,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:21:39,103 INFO L225 Difference]: With dead ends: 2270 [2020-10-14 04:21:39,103 INFO L226 Difference]: Without dead ends: 1432 [2020-10-14 04:21:39,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:21:39,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2020-10-14 04:21:39,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1425. [2020-10-14 04:21:39,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2020-10-14 04:21:39,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2229 transitions. [2020-10-14 04:21:39,258 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2229 transitions. Word has length 38 [2020-10-14 04:21:39,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:21:39,259 INFO L479 AbstractCegarLoop]: Abstraction has 1425 states and 2229 transitions. [2020-10-14 04:21:39,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:21:39,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2229 transitions. [2020-10-14 04:21:39,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-14 04:21:39,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:21:39,265 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:21:39,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:21:39,266 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:21:39,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:21:39,266 INFO L82 PathProgramCache]: Analyzing trace with hash 268953492, now seen corresponding path program 1 times [2020-10-14 04:21:39,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:21:39,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332405964] [2020-10-14 04:21:39,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:21:39,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:39,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:39,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:40,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:40,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 04:21:40,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:21:40,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 873 [2020-10-14 04:21:40,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:40,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:40,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:21:40,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 04:21:40,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 04:21:40,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:40,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:21:40,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:40,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:40,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:40,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:21:40,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:40,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 04:21:40,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:40,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:40,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:21:40,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:40,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:21:40,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:40,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:21:40,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:40,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:40,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:40,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 04:21:40,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:40,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 04:21:40,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:40,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:40,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:21:40,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:40,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 04:21:40,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:40,409 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:21:40,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332405964] [2020-10-14 04:21:40,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:21:40,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:21:40,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830897469] [2020-10-14 04:21:40,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:21:40,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:21:40,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:21:40,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:21:40,414 INFO L87 Difference]: Start difference. First operand 1425 states and 2229 transitions. Second operand 5 states. [2020-10-14 04:21:50,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:21:50,701 INFO L93 Difference]: Finished difference Result 3561 states and 5819 transitions. [2020-10-14 04:21:50,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:21:50,702 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-14 04:21:50,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:21:50,716 INFO L225 Difference]: With dead ends: 3561 [2020-10-14 04:21:50,716 INFO L226 Difference]: Without dead ends: 2142 [2020-10-14 04:21:50,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:21:50,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2020-10-14 04:21:50,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2138. [2020-10-14 04:21:50,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2138 states. [2020-10-14 04:21:50,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2138 states to 2138 states and 3083 transitions. [2020-10-14 04:21:50,784 INFO L78 Accepts]: Start accepts. Automaton has 2138 states and 3083 transitions. Word has length 108 [2020-10-14 04:21:50,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:21:50,785 INFO L479 AbstractCegarLoop]: Abstraction has 2138 states and 3083 transitions. [2020-10-14 04:21:50,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:21:50,785 INFO L276 IsEmpty]: Start isEmpty. Operand 2138 states and 3083 transitions. [2020-10-14 04:21:50,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-14 04:21:50,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:21:50,788 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:21:50,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:21:50,789 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:21:50,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:21:50,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1827464816, now seen corresponding path program 1 times [2020-10-14 04:21:50,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:21:50,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1625908521] [2020-10-14 04:21:50,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:21:50,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:50,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:50,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:51,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:51,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:51,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 04:21:51,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:21:51,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1130 [2020-10-14 04:21:51,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:51,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:51,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:21:51,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-14 04:21:51,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 04:21:51,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:52,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:21:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:52,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:52,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:52,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:21:52,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:52,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:21:52,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:52,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:52,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:21:52,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:52,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:21:52,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:52,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:21:52,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:52,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:52,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:52,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:21:52,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:52,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 04:21:52,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:52,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:52,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:21:52,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:52,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 04:21:52,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:52,208 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:21:52,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1625908521] [2020-10-14 04:21:52,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:21:52,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:21:52,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641895728] [2020-10-14 04:21:52,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:21:52,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:21:52,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:21:52,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:21:52,213 INFO L87 Difference]: Start difference. First operand 2138 states and 3083 transitions. Second operand 5 states. [2020-10-14 04:22:02,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:22:02,769 INFO L93 Difference]: Finished difference Result 6412 states and 9323 transitions. [2020-10-14 04:22:02,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:22:02,770 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-14 04:22:02,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:22:02,792 INFO L225 Difference]: With dead ends: 6412 [2020-10-14 04:22:02,792 INFO L226 Difference]: Without dead ends: 4280 [2020-10-14 04:22:02,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:22:02,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4280 states. [2020-10-14 04:22:02,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4280 to 4268. [2020-10-14 04:22:02,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4268 states. [2020-10-14 04:22:02,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4268 states to 4268 states and 5661 transitions. [2020-10-14 04:22:02,906 INFO L78 Accepts]: Start accepts. Automaton has 4268 states and 5661 transitions. Word has length 126 [2020-10-14 04:22:02,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:22:02,906 INFO L479 AbstractCegarLoop]: Abstraction has 4268 states and 5661 transitions. [2020-10-14 04:22:02,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:22:02,907 INFO L276 IsEmpty]: Start isEmpty. Operand 4268 states and 5661 transitions. [2020-10-14 04:22:02,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-14 04:22:02,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:22:02,910 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:22:02,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:22:02,911 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:22:02,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:22:02,911 INFO L82 PathProgramCache]: Analyzing trace with hash 879995564, now seen corresponding path program 1 times [2020-10-14 04:22:02,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:22:02,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [380295732] [2020-10-14 04:22:02,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:22:02,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:02,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:03,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:03,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:03,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 04:22:03,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:22:03,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 736 [2020-10-14 04:22:03,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:03,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:03,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:22:03,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-14 04:22:03,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 04:22:03,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:22:03,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:22:03,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:03,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:03,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:03,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:22:03,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:03,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:22:03,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:03,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:03,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:22:03,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:03,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:22:03,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:22:03,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:22:03,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:03,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:03,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:03,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:22:03,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:03,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 04:22:03,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:03,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:03,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:22:03,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:03,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 04:22:03,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:22:03,898 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:22:03,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [380295732] [2020-10-14 04:22:03,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:22:03,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:22:03,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416974710] [2020-10-14 04:22:03,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:22:03,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:22:03,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:22:03,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:22:03,904 INFO L87 Difference]: Start difference. First operand 4268 states and 5661 transitions. Second operand 5 states. [2020-10-14 04:22:12,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:22:12,640 INFO L93 Difference]: Finished difference Result 9962 states and 13744 transitions. [2020-10-14 04:22:12,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:22:12,643 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-14 04:22:12,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:22:12,674 INFO L225 Difference]: With dead ends: 9962 [2020-10-14 04:22:12,674 INFO L226 Difference]: Without dead ends: 5700 [2020-10-14 04:22:12,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:22:12,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5700 states. [2020-10-14 04:22:12,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5700 to 5688. [2020-10-14 04:22:12,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5688 states. [2020-10-14 04:22:12,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5688 states to 5688 states and 7299 transitions. [2020-10-14 04:22:12,854 INFO L78 Accepts]: Start accepts. Automaton has 5688 states and 7299 transitions. Word has length 128 [2020-10-14 04:22:12,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:22:12,856 INFO L479 AbstractCegarLoop]: Abstraction has 5688 states and 7299 transitions. [2020-10-14 04:22:12,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:22:12,856 INFO L276 IsEmpty]: Start isEmpty. Operand 5688 states and 7299 transitions. [2020-10-14 04:22:12,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-14 04:22:12,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:22:12,866 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:22:12,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:22:12,866 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:22:12,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:22:12,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1782953480, now seen corresponding path program 1 times [2020-10-14 04:22:12,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:22:12,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127187724] [2020-10-14 04:22:12,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:22:12,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:12,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:13,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:13,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:13,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-14 04:22:13,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:22:13,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 895 [2020-10-14 04:22:13,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:13,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:13,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:22:13,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-14 04:22:13,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 04:22:13,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:22:13,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:22:13,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:13,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:13,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:13,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:22:13,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:13,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:22:13,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:13,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:13,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:22:13,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:13,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:22:13,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:22:13,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:22:13,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:13,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:13,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:13,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-14 04:22:14,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:14,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 04:22:14,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:14,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:14,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:22:14,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:14,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 04:22:14,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:22:14,073 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:22:14,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127187724] [2020-10-14 04:22:14,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:22:14,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:22:14,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214664017] [2020-10-14 04:22:14,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:22:14,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:22:14,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:22:14,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:22:14,079 INFO L87 Difference]: Start difference. First operand 5688 states and 7299 transitions. Second operand 5 states. [2020-10-14 04:22:23,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:22:23,422 INFO L93 Difference]: Finished difference Result 15636 states and 20504 transitions. [2020-10-14 04:22:23,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:22:23,430 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-14 04:22:23,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:22:23,471 INFO L225 Difference]: With dead ends: 15636 [2020-10-14 04:22:23,472 INFO L226 Difference]: Without dead ends: 9954 [2020-10-14 04:22:23,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:22:23,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9954 states. [2020-10-14 04:22:23,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9954 to 9950. [2020-10-14 04:22:23,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9950 states. [2020-10-14 04:22:23,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9950 states to 9950 states and 12254 transitions. [2020-10-14 04:22:23,755 INFO L78 Accepts]: Start accepts. Automaton has 9950 states and 12254 transitions. Word has length 170 [2020-10-14 04:22:23,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:22:23,756 INFO L479 AbstractCegarLoop]: Abstraction has 9950 states and 12254 transitions. [2020-10-14 04:22:23,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:22:23,756 INFO L276 IsEmpty]: Start isEmpty. Operand 9950 states and 12254 transitions. [2020-10-14 04:22:23,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-14 04:22:23,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:22:23,761 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:22:23,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:22:23,761 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:22:23,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:22:23,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1425388532, now seen corresponding path program 1 times [2020-10-14 04:22:23,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:22:23,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184316832] [2020-10-14 04:22:23,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:22:23,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:23,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:24,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:24,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:24,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:24,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-14 04:22:24,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:22:24,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 902 [2020-10-14 04:22:24,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:24,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:24,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:22:24,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-10-14 04:22:24,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 04:22:24,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:22:24,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:22:24,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:24,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:24,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:24,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:22:24,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:24,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:22:24,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:24,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:24,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:22:24,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:24,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:22:24,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:24,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:22:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:24,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:24,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:24,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-14 04:22:24,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:24,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-14 04:22:24,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:24,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:24,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:22:24,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:24,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-14 04:22:24,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:22:25,066 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:22:25,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184316832] [2020-10-14 04:22:25,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:22:25,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:22:25,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362755735] [2020-10-14 04:22:25,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:22:25,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:22:25,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:22:25,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:22:25,070 INFO L87 Difference]: Start difference. First operand 9950 states and 12254 transitions. Second operand 5 states. [2020-10-14 04:22:34,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:22:34,217 INFO L93 Difference]: Finished difference Result 22735 states and 28890 transitions. [2020-10-14 04:22:34,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:22:34,219 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 188 [2020-10-14 04:22:34,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:22:34,262 INFO L225 Difference]: With dead ends: 22735 [2020-10-14 04:22:34,262 INFO L226 Difference]: Without dead ends: 12791 [2020-10-14 04:22:34,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:22:34,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12791 states. [2020-10-14 04:22:34,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12791 to 12787. [2020-10-14 04:22:34,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12787 states. [2020-10-14 04:22:34,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12787 states to 12787 states and 15817 transitions. [2020-10-14 04:22:34,544 INFO L78 Accepts]: Start accepts. Automaton has 12787 states and 15817 transitions. Word has length 188 [2020-10-14 04:22:34,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:22:34,545 INFO L479 AbstractCegarLoop]: Abstraction has 12787 states and 15817 transitions. [2020-10-14 04:22:34,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:22:34,545 INFO L276 IsEmpty]: Start isEmpty. Operand 12787 states and 15817 transitions. [2020-10-14 04:22:34,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-10-14 04:22:34,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:22:34,555 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:22:34,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:22:34,555 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:22:34,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:22:34,556 INFO L82 PathProgramCache]: Analyzing trace with hash 245563934, now seen corresponding path program 1 times [2020-10-14 04:22:34,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:22:34,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1263997716] [2020-10-14 04:22:34,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:22:34,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:34,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:34,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:34,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:35,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:36,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:38,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:38,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 04:22:38,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:22:38,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4166 [2020-10-14 04:22:38,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:38,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:38,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:22:38,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-14 04:22:38,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 04:22:38,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:22:38,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:22:38,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:38,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:38,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:38,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:22:38,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:38,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:22:38,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:38,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:38,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:22:38,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:38,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:22:38,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:22:38,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:22:38,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:38,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:38,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:38,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:22:38,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:38,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 04:22:38,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:38,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:38,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:22:38,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:38,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 04:22:38,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:22:39,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 04:22:39,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:39,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:39,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:39,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 04:22:39,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:39,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-14 04:22:39,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:39,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:39,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:22:39,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:22:39,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-14 04:22:39,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:22:39,492 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:22:39,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1263997716] [2020-10-14 04:22:39,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:22:39,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:22:39,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252966499] [2020-10-14 04:22:39,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:22:39,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:22:39,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:22:39,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:22:39,497 INFO L87 Difference]: Start difference. First operand 12787 states and 15817 transitions. Second operand 7 states. [2020-10-14 04:23:01,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:23:01,035 INFO L93 Difference]: Finished difference Result 43785 states and 57361 transitions. [2020-10-14 04:23:01,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:23:01,036 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 263 [2020-10-14 04:23:01,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:23:01,175 INFO L225 Difference]: With dead ends: 43785 [2020-10-14 04:23:01,175 INFO L226 Difference]: Without dead ends: 31004 [2020-10-14 04:23:01,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:23:01,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31004 states. [2020-10-14 04:23:01,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31004 to 30794. [2020-10-14 04:23:01,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30794 states. [2020-10-14 04:23:01,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30794 states to 30794 states and 37774 transitions. [2020-10-14 04:23:02,002 INFO L78 Accepts]: Start accepts. Automaton has 30794 states and 37774 transitions. Word has length 263 [2020-10-14 04:23:02,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:23:02,002 INFO L479 AbstractCegarLoop]: Abstraction has 30794 states and 37774 transitions. [2020-10-14 04:23:02,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:23:02,003 INFO L276 IsEmpty]: Start isEmpty. Operand 30794 states and 37774 transitions. [2020-10-14 04:23:02,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-10-14 04:23:02,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:23:02,023 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:23:02,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:23:02,023 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:23:02,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:23:02,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1826400838, now seen corresponding path program 1 times [2020-10-14 04:23:02,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:23:02,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003503834] [2020-10-14 04:23:02,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:23:02,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:23:02,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:02,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:03,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:03,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:03,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:03,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:07,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:23:07,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-14 04:23:07,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 04:23:07,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-14 04:23:07,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:23:07,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:23:07,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:23:07,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-14 04:23:07,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 04:23:07,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:23:07,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:23:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:23:07,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:07,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:23:07,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:23:07,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:23:07,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:23:07,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:23:07,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:23:07,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:23:07,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:23:07,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:23:07,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:23:07,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:23:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:23:07,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:07,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:23:07,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 04:23:07,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:23:07,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-14 04:23:07,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:23:07,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:23:07,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:23:07,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:23:07,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-14 04:23:07,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:23:07,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-14 04:23:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:23:07,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:07,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:23:07,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 04:23:07,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:23:07,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-14 04:23:07,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:23:07,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:23:07,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:23:07,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:23:07,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-14 04:23:07,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:23:07,844 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 194 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:23:07,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003503834] [2020-10-14 04:23:07,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:23:07,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 04:23:07,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94724867] [2020-10-14 04:23:07,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:23:07,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:23:07,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:23:07,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:23:07,849 INFO L87 Difference]: Start difference. First operand 30794 states and 37774 transitions. Second operand 8 states. [2020-10-14 04:23:21,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:23:21,975 INFO L93 Difference]: Finished difference Result 68923 states and 86904 transitions. [2020-10-14 04:23:21,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 04:23:21,976 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 315 [2020-10-14 04:23:21,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:23:22,055 INFO L225 Difference]: With dead ends: 68923 [2020-10-14 04:23:22,056 INFO L226 Difference]: Without dead ends: 33111 [2020-10-14 04:23:22,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:23:22,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33111 states. [2020-10-14 04:23:22,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33111 to 33052. [2020-10-14 04:23:22,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33052 states. [2020-10-14 04:23:22,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33052 states to 33052 states and 37193 transitions. [2020-10-14 04:23:22,818 INFO L78 Accepts]: Start accepts. Automaton has 33052 states and 37193 transitions. Word has length 315 [2020-10-14 04:23:22,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:23:22,820 INFO L479 AbstractCegarLoop]: Abstraction has 33052 states and 37193 transitions. [2020-10-14 04:23:22,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:23:22,820 INFO L276 IsEmpty]: Start isEmpty. Operand 33052 states and 37193 transitions. [2020-10-14 04:23:22,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-10-14 04:23:22,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:23:22,836 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:23:22,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:23:22,837 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:23:22,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:23:22,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1554580187, now seen corresponding path program 1 times [2020-10-14 04:23:22,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:23:22,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378720020] [2020-10-14 04:23:22,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:23:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:23:22,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:23,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:23,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:27,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:23:27,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 392 [2020-10-14 04:23:27,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:23:27,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4185 [2020-10-14 04:23:27,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:23:27,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:23:27,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:23:27,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-14 04:23:27,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-14 04:23:27,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:23:27,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:23:27,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:23:27,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:27,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:23:27,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:23:27,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:23:27,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:23:27,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:23:27,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:23:27,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:23:27,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:23:27,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:23:27,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:23:27,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:23:27,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:23:27,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:27,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:23:27,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:23:27,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:23:27,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 04:23:27,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:23:27,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:23:27,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:23:27,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:23:27,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 04:23:27,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:23:27,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 04:23:27,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:23:27,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:27,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:23:27,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-14 04:23:27,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:23:27,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-14 04:23:27,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:23:27,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:23:27,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:23:27,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:23:27,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-14 04:23:27,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:23:27,774 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:23:27,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [378720020] [2020-10-14 04:23:27,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:23:27,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:23:27,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862692844] [2020-10-14 04:23:27,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:23:27,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:23:27,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:23:27,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:23:27,777 INFO L87 Difference]: Start difference. First operand 33052 states and 37193 transitions. Second operand 7 states. [2020-10-14 04:23:36,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:23:36,630 INFO L93 Difference]: Finished difference Result 81198 states and 92942 transitions. [2020-10-14 04:23:36,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:23:36,633 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 380 [2020-10-14 04:23:36,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:23:36,753 INFO L225 Difference]: With dead ends: 81198 [2020-10-14 04:23:36,753 INFO L226 Difference]: Without dead ends: 48858 [2020-10-14 04:23:36,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:23:36,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48858 states. [2020-10-14 04:23:37,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48858 to 48730. [2020-10-14 04:23:37,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48730 states. [2020-10-14 04:23:37,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48730 states to 48730 states and 54365 transitions. [2020-10-14 04:23:37,843 INFO L78 Accepts]: Start accepts. Automaton has 48730 states and 54365 transitions. Word has length 380 [2020-10-14 04:23:37,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:23:37,843 INFO L479 AbstractCegarLoop]: Abstraction has 48730 states and 54365 transitions. [2020-10-14 04:23:37,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:23:37,843 INFO L276 IsEmpty]: Start isEmpty. Operand 48730 states and 54365 transitions. [2020-10-14 04:23:37,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2020-10-14 04:23:37,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:23:37,871 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:23:37,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:23:37,872 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:23:37,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:23:37,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1208923614, now seen corresponding path program 1 times [2020-10-14 04:23:37,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:23:37,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302787429] [2020-10-14 04:23:37,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:23:37,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:23:38,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:38,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:39,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:39,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:43,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:23:43,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 449 [2020-10-14 04:23:43,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:23:43,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-14 04:23:43,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:23:43,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:23:43,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:23:43,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-14 04:23:43,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 280 [2020-10-14 04:23:43,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:23:43,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:23:43,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:23:43,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:43,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:23:43,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:23:43,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:23:43,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:23:43,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:23:43,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:23:43,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:23:43,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:23:43,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:23:43,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:23:43,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:23:43,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:23:43,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:43,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:23:43,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:23:43,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:23:43,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 04:23:43,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:23:43,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:23:43,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:23:43,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:23:43,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 04:23:43,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:23:43,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:23:43,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:23:43,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:43,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:23:43,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-14 04:23:43,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:23:43,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-14 04:23:43,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:23:43,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:23:43,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:23:43,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:23:43,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 278 [2020-10-14 04:23:43,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:23:43,709 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 181 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:23:43,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302787429] [2020-10-14 04:23:43,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:23:43,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:23:43,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988019009] [2020-10-14 04:23:43,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:23:43,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:23:43,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:23:43,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:23:43,712 INFO L87 Difference]: Start difference. First operand 48730 states and 54365 transitions. Second operand 7 states. [2020-10-14 04:23:55,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:23:55,454 INFO L93 Difference]: Finished difference Result 117419 states and 133756 transitions. [2020-10-14 04:23:55,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:23:55,455 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 437 [2020-10-14 04:23:55,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:23:55,578 INFO L225 Difference]: With dead ends: 117419 [2020-10-14 04:23:55,578 INFO L226 Difference]: Without dead ends: 68695 [2020-10-14 04:23:55,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:23:55,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68695 states. [2020-10-14 04:23:56,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68695 to 68683. [2020-10-14 04:23:56,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68683 states. [2020-10-14 04:23:56,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68683 states to 68683 states and 78727 transitions. [2020-10-14 04:23:56,764 INFO L78 Accepts]: Start accepts. Automaton has 68683 states and 78727 transitions. Word has length 437 [2020-10-14 04:23:56,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:23:56,765 INFO L479 AbstractCegarLoop]: Abstraction has 68683 states and 78727 transitions. [2020-10-14 04:23:56,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:23:56,765 INFO L276 IsEmpty]: Start isEmpty. Operand 68683 states and 78727 transitions. [2020-10-14 04:23:56,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2020-10-14 04:23:56,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:23:56,798 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:23:56,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 04:23:56,799 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:23:56,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:23:56,799 INFO L82 PathProgramCache]: Analyzing trace with hash 728780477, now seen corresponding path program 1 times [2020-10-14 04:23:56,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:23:56,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621774454] [2020-10-14 04:23:56,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:23:56,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:23:56,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:56,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:57,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:59,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:00,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:01,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:24:01,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 498 [2020-10-14 04:24:01,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:24:01,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-14 04:24:01,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:24:01,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:24:01,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:24:01,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 225 [2020-10-14 04:24:01,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 04:24:01,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:24:01,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:24:01,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:24:01,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:01,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:24:01,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:24:01,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:24:01,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:24:01,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:24:01,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:24:01,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:24:01,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:24:01,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:24:01,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:24:01,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:24:02,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:24:02,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:02,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:24:02,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 04:24:02,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:24:02,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 04:24:02,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:24:02,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:24:02,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:24:02,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:24:02,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:24:02,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:24:02,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-14 04:24:02,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:24:02,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:02,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:24:02,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:24:02,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:24:02,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 04:24:02,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:24:02,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:24:02,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:24:02,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:24:02,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:24:02,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:24:02,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 04:24:02,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:24:02,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:02,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:24:02,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 04:24:02,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:24:02,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 04:24:02,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:24:02,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:24:02,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:24:02,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:24:02,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 04:24:02,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:24:02,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2020-10-14 04:24:02,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:24:02,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:02,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:24:02,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 04:24:02,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:24:02,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 04:24:02,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:24:02,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:24:02,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:24:02,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-14 04:24:02,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:24:02,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:24:02,568 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 298 proven. 95 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2020-10-14 04:24:02,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621774454] [2020-10-14 04:24:02,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:24:02,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:24:02,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103991247] [2020-10-14 04:24:02,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:24:02,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:24:02,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:24:02,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:24:02,571 INFO L87 Difference]: Start difference. First operand 68683 states and 78727 transitions. Second operand 7 states. [2020-10-14 04:24:11,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:24:11,947 INFO L93 Difference]: Finished difference Result 145186 states and 167895 transitions. [2020-10-14 04:24:11,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:24:11,948 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 482 [2020-10-14 04:24:11,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:24:12,490 INFO L225 Difference]: With dead ends: 145186 [2020-10-14 04:24:12,490 INFO L226 Difference]: Without dead ends: 77913 [2020-10-14 04:24:12,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:24:12,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77913 states. [2020-10-14 04:24:13,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77913 to 77871. [2020-10-14 04:24:13,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77871 states. [2020-10-14 04:24:13,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77871 states to 77871 states and 88186 transitions. [2020-10-14 04:24:13,577 INFO L78 Accepts]: Start accepts. Automaton has 77871 states and 88186 transitions. Word has length 482 [2020-10-14 04:24:13,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:24:13,578 INFO L479 AbstractCegarLoop]: Abstraction has 77871 states and 88186 transitions. [2020-10-14 04:24:13,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:24:13,578 INFO L276 IsEmpty]: Start isEmpty. Operand 77871 states and 88186 transitions. [2020-10-14 04:24:13,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 671 [2020-10-14 04:24:13,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:24:13,643 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 04:24:13,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 04:24:13,644 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:24:13,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:24:13,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1189615287, now seen corresponding path program 1 times [2020-10-14 04:24:13,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:24:13,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1161430085] [2020-10-14 04:24:13,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:24:13,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:24:13,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:13,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:14,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:14,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:18,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:24:18,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 690 [2020-10-14 04:24:18,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:24:18,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 04:24:18,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:24:18,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:24:18,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:24:18,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-14 04:24:18,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 04:24:18,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:24:18,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:24:18,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:24:18,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:18,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:24:18,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:24:18,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:24:18,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:24:18,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:24:18,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:24:18,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:24:18,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:24:18,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:24:18,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:24:18,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:24:18,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:24:18,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:18,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:24:18,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:24:18,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:24:18,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 04:24:18,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:24:18,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:24:18,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:24:18,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:24:18,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 04:24:18,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:24:18,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:24:18,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:24:18,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:19,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:24:19,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 04:24:19,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:24:19,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-14 04:24:19,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:24:19,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:24:19,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:24:19,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:24:19,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-14 04:24:19,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:24:19,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-14 04:24:19,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:24:19,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:19,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:24:19,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 04:24:19,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:24:19,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 04:24:19,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:24:19,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:24:19,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:24:19,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 04:24:19,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:24:19,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:24:19,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-14 04:24:19,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:24:19,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:19,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:24:19,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 04:24:19,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:24:19,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 04:24:19,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:24:19,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:24:19,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:24:19,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-14 04:24:19,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:24:19,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:24:19,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-14 04:24:19,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:24:19,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:19,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:24:19,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 04:24:19,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:24:19,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 04:24:19,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:24:19,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:24:19,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:24:19,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-14 04:24:19,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:24:19,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:24:19,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2020-10-14 04:24:19,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:24:19,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:19,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:24:19,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 04:24:19,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:24:19,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 04:24:19,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:24:19,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:24:19,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:24:19,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-14 04:24:19,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:24:19,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:24:20,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 321 proven. 365 refuted. 0 times theorem prover too weak. 839 trivial. 0 not checked. [2020-10-14 04:24:20,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1161430085] [2020-10-14 04:24:20,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:24:20,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:24:20,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132641509] [2020-10-14 04:24:20,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:24:20,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:24:20,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:24:20,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:24:20,056 INFO L87 Difference]: Start difference. First operand 77871 states and 88186 transitions. Second operand 7 states. [2020-10-14 04:24:28,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:24:28,934 INFO L93 Difference]: Finished difference Result 154425 states and 175203 transitions. [2020-10-14 04:24:28,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:24:28,936 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 670 [2020-10-14 04:24:28,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:24:29,090 INFO L225 Difference]: With dead ends: 154425 [2020-10-14 04:24:29,090 INFO L226 Difference]: Without dead ends: 77964 [2020-10-14 04:24:29,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:24:29,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77964 states. [2020-10-14 04:24:29,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77964 to 77874. [2020-10-14 04:24:29,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77874 states. [2020-10-14 04:24:29,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77874 states to 77874 states and 85628 transitions. [2020-10-14 04:24:29,992 INFO L78 Accepts]: Start accepts. Automaton has 77874 states and 85628 transitions. Word has length 670 [2020-10-14 04:24:29,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:24:29,992 INFO L479 AbstractCegarLoop]: Abstraction has 77874 states and 85628 transitions. [2020-10-14 04:24:29,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:24:29,993 INFO L276 IsEmpty]: Start isEmpty. Operand 77874 states and 85628 transitions. [2020-10-14 04:24:30,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2020-10-14 04:24:30,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:24:30,016 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:24:30,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 04:24:30,016 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:24:30,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:24:30,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1981887778, now seen corresponding path program 1 times [2020-10-14 04:24:30,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:24:30,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831148894] [2020-10-14 04:24:30,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:24:30,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:24:30,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:30,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:30,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:31,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:31,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:36,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:24:36,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 697 [2020-10-14 04:24:36,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:24:36,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6091 [2020-10-14 04:24:36,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:24:36,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:24:36,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:24:36,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-14 04:24:36,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 04:24:36,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:24:36,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:24:36,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:24:36,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:36,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:24:36,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:24:36,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:24:36,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:24:36,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:24:36,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:24:36,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:24:36,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:24:36,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:24:36,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:24:36,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:24:36,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:24:36,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:36,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:24:36,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:24:36,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:24:36,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 04:24:36,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:24:36,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:24:36,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:24:36,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:24:36,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 04:24:36,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:24:36,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:24:36,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:24:36,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:36,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:24:36,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 04:24:36,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:24:36,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 04:24:36,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:24:36,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:24:36,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:24:36,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:24:36,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 04:24:36,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:24:36,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-14 04:24:36,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:24:36,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:36,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:24:36,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:24:36,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:24:36,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 04:24:36,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:24:36,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:24:36,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:24:36,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-14 04:24:36,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:24:36,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:24:36,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-14 04:24:36,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:24:36,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:36,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:24:36,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 04:24:36,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:24:36,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 04:24:36,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:24:36,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:24:36,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:24:36,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-14 04:24:36,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:24:36,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:24:36,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2020-10-14 04:24:36,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:24:36,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:36,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:24:36,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 04:24:36,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:24:36,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 04:24:36,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:24:36,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:24:36,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:24:36,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-14 04:24:36,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:24:36,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:24:36,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2020-10-14 04:24:36,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:24:36,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:36,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:24:36,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 04:24:36,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:24:36,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 04:24:36,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:24:36,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:24:36,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:24:36,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-14 04:24:36,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:24:36,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:24:36,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1562 backedges. 321 proven. 372 refuted. 0 times theorem prover too weak. 869 trivial. 0 not checked. [2020-10-14 04:24:36,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831148894] [2020-10-14 04:24:36,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:24:36,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:24:36,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918085859] [2020-10-14 04:24:36,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:24:36,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:24:36,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:24:36,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:24:36,892 INFO L87 Difference]: Start difference. First operand 77874 states and 85628 transitions. Second operand 7 states. [2020-10-14 04:24:48,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:24:48,449 INFO L93 Difference]: Finished difference Result 169946 states and 187768 transitions. [2020-10-14 04:24:48,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:24:48,454 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 677 [2020-10-14 04:24:48,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:24:48,615 INFO L225 Difference]: With dead ends: 169946 [2020-10-14 04:24:48,616 INFO L226 Difference]: Without dead ends: 93482 [2020-10-14 04:24:48,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:24:48,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93482 states. [2020-10-14 04:24:49,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93482 to 93462. [2020-10-14 04:24:49,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93462 states. [2020-10-14 04:24:49,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93462 states to 93462 states and 101919 transitions. [2020-10-14 04:24:49,551 INFO L78 Accepts]: Start accepts. Automaton has 93462 states and 101919 transitions. Word has length 677 [2020-10-14 04:24:49,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:24:49,552 INFO L479 AbstractCegarLoop]: Abstraction has 93462 states and 101919 transitions. [2020-10-14 04:24:49,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:24:49,552 INFO L276 IsEmpty]: Start isEmpty. Operand 93462 states and 101919 transitions. [2020-10-14 04:24:49,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 703 [2020-10-14 04:24:49,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:24:49,563 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:24:49,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 04:24:49,564 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:24:49,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:24:49,564 INFO L82 PathProgramCache]: Analyzing trace with hash 165338638, now seen corresponding path program 1 times [2020-10-14 04:24:49,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:24:49,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543216693] [2020-10-14 04:24:49,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:24:49,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:24:49,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:49,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:52,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:53,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking...