/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:30:45,764 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:30:45,767 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:30:45,796 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:30:45,796 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:30:45,797 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:30:45,799 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:30:45,801 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:30:45,802 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:30:45,803 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:30:45,804 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:30:45,805 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:30:45,806 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:30:45,807 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:30:45,808 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:30:45,809 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:30:45,810 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:30:45,811 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:30:45,814 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:30:45,816 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:30:45,818 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:30:45,819 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:30:45,820 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:30:45,821 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:30:45,827 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:30:45,828 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:30:45,831 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:30:45,832 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:30:45,833 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:30:45,833 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:30:45,837 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:30:45,838 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:30:45,838 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:30:45,839 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:30:45,841 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:30:45,841 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:30:45,842 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:30:45,842 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:30:45,843 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:30:45,844 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:30:45,846 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:30:45,847 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 19:30:45,900 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:30:45,900 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:30:45,903 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:30:45,903 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:30:45,904 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:30:45,904 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:30:45,904 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:30:45,905 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:30:45,905 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:30:45,905 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:30:45,906 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:30:45,906 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:30:45,906 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:30:45,907 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:30:45,907 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:30:45,907 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:30:45,908 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:30:45,908 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:30:45,908 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:30:45,908 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:30:45,908 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:30:45,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:30:45,909 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:30:45,909 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:30:45,909 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:30:45,909 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:30:45,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:30:45,910 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:30:45,910 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:30:45,910 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:30:46,387 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:30:46,415 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:30:46,421 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:30:46,425 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:30:46,425 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:30:46,427 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label30.c [2020-09-24 19:30:46,523 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/780a6ebbe/144c72d7a3c6455389a344f8d9d02bec/FLAG01a48f9ee [2020-09-24 19:30:47,181 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:30:47,183 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label30.c [2020-09-24 19:30:47,209 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/780a6ebbe/144c72d7a3c6455389a344f8d9d02bec/FLAG01a48f9ee [2020-09-24 19:30:47,408 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/780a6ebbe/144c72d7a3c6455389a344f8d9d02bec [2020-09-24 19:30:47,423 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:30:47,429 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:30:47,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:30:47,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:30:47,435 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:30:47,436 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:30:47" (1/1) ... [2020-09-24 19:30:47,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cbac012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:47, skipping insertion in model container [2020-09-24 19:30:47,441 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:30:47" (1/1) ... [2020-09-24 19:30:47,451 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:30:47,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:30:48,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:30:48,141 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:30:48,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:30:48,365 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:30:48,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:48 WrapperNode [2020-09-24 19:30:48,371 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:30:48,372 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:30:48,372 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:30:48,373 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:30:48,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:48" (1/1) ... [2020-09-24 19:30:48,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:48" (1/1) ... [2020-09-24 19:30:48,417 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:48" (1/1) ... [2020-09-24 19:30:48,417 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:48" (1/1) ... [2020-09-24 19:30:48,466 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:48" (1/1) ... [2020-09-24 19:30:48,504 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:48" (1/1) ... [2020-09-24 19:30:48,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:48" (1/1) ... [2020-09-24 19:30:48,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:30:48,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:30:48,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:30:48,540 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:30:48,542 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:30:48,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:30:48,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:30:48,645 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 19:30:48,645 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:30:48,645 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 19:30:48,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:30:48,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:30:48,646 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 19:30:48,647 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:30:48,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:30:48,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:30:50,341 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:30:50,341 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 19:30:50,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:30:50 BoogieIcfgContainer [2020-09-24 19:30:50,352 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:30:50,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:30:50,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:30:50,357 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:30:50,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:30:47" (1/3) ... [2020-09-24 19:30:50,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45dec0ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:30:50, skipping insertion in model container [2020-09-24 19:30:50,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:48" (2/3) ... [2020-09-24 19:30:50,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45dec0ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:30:50, skipping insertion in model container [2020-09-24 19:30:50,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:30:50" (3/3) ... [2020-09-24 19:30:50,366 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label30.c [2020-09-24 19:30:50,378 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:30:50,392 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:30:50,415 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:30:50,467 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:30:50,468 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:30:50,468 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:30:50,468 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:30:50,468 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:30:50,468 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:30:50,469 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:30:50,469 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:30:50,519 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-24 19:30:50,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-24 19:30:50,537 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:50,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:50,539 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:50,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:50,549 INFO L82 PathProgramCache]: Analyzing trace with hash 2082104676, now seen corresponding path program 1 times [2020-09-24 19:30:50,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:50,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836172546] [2020-09-24 19:30:50,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:50,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:51,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:51,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:51,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 19:30:51,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:30:51,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 758 [2020-09-24 19:30:51,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:51,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:30:51,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 19:30:51,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-24 19:30:51,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 19:30:51,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:51,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:51,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:51,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:51,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:51,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:51,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 19:30:51,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:51,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:51,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:51,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 19:30:51,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:51,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:30:51,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836172546] [2020-09-24 19:30:51,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:30:51,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:30:51,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161880748] [2020-09-24 19:30:51,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:30:51,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:51,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:30:51,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:30:51,850 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 4 states. [2020-09-24 19:30:54,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:54,707 INFO L93 Difference]: Finished difference Result 1564 states and 2106 transitions. [2020-09-24 19:30:54,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:30:54,710 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-09-24 19:30:54,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:54,737 INFO L225 Difference]: With dead ends: 1564 [2020-09-24 19:30:54,737 INFO L226 Difference]: Without dead ends: 828 [2020-09-24 19:30:54,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:30:54,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2020-09-24 19:30:54,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 806. [2020-09-24 19:30:54,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-09-24 19:30:54,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 982 transitions. [2020-09-24 19:30:54,868 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 982 transitions. Word has length 62 [2020-09-24 19:30:54,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:54,869 INFO L479 AbstractCegarLoop]: Abstraction has 806 states and 982 transitions. [2020-09-24 19:30:54,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:30:54,869 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 982 transitions. [2020-09-24 19:30:54,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-24 19:30:54,878 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:54,879 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 19:30:54,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:30:54,880 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:54,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:54,880 INFO L82 PathProgramCache]: Analyzing trace with hash 824518871, now seen corresponding path program 1 times [2020-09-24 19:30:54,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:54,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147749316] [2020-09-24 19:30:54,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:54,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:54,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:55,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:55,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:55,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:55,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:55,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:55,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-24 19:30:55,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:30:55,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1013 [2020-09-24 19:30:55,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:55,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:55,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-09-24 19:30:55,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 19:30:55,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:56,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:56,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:56,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:56,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:56,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:56,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:56,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:30:56,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:56,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:56,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:56,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:56,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:56,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:56,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:56,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:56,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:56,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 19:30:56,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:56,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-24 19:30:56,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:56,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:56,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:56,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-24 19:30:56,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:56,281 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:30:56,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147749316] [2020-09-24 19:30:56,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:56,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:30:56,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423851515] [2020-09-24 19:30:56,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:30:56,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:56,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:30:56,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:30:56,286 INFO L87 Difference]: Start difference. First operand 806 states and 982 transitions. Second operand 5 states. [2020-09-24 19:30:59,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:59,110 INFO L93 Difference]: Finished difference Result 1816 states and 2293 transitions. [2020-09-24 19:30:59,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:30:59,111 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-09-24 19:30:59,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:59,121 INFO L225 Difference]: With dead ends: 1816 [2020-09-24 19:30:59,121 INFO L226 Difference]: Without dead ends: 1025 [2020-09-24 19:30:59,125 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:30:59,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2020-09-24 19:30:59,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 997. [2020-09-24 19:30:59,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-09-24 19:30:59,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1182 transitions. [2020-09-24 19:30:59,179 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1182 transitions. Word has length 141 [2020-09-24 19:30:59,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:59,181 INFO L479 AbstractCegarLoop]: Abstraction has 997 states and 1182 transitions. [2020-09-24 19:30:59,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:30:59,182 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1182 transitions. [2020-09-24 19:30:59,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-09-24 19:30:59,188 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:59,188 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:59,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:30:59,189 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:59,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:59,189 INFO L82 PathProgramCache]: Analyzing trace with hash 892447597, now seen corresponding path program 1 times [2020-09-24 19:30:59,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:59,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [373359064] [2020-09-24 19:30:59,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:59,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:59,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:59,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:59,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:59,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:00,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:00,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:00,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-09-24 19:31:00,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:31:00,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1042 [2020-09-24 19:31:00,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:00,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:31:00,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-09-24 19:31:00,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 19:31:00,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:00,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:31:00,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:00,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:00,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:00,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:31:00,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:00,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:31:00,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:00,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:00,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:00,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:00,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:00,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:31:00,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:00,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:00,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:00,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 19:31:00,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:00,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-24 19:31:00,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:00,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:31:00,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:00,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-24 19:31:00,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:00,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 19:31:00,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:00,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:00,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:00,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 19:31:00,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:00,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-09-24 19:31:00,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:00,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:00,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:31:00,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-24 19:31:00,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:00,994 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:31:00,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [373359064] [2020-09-24 19:31:00,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:31:00,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:31:00,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557247405] [2020-09-24 19:31:00,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:31:00,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:31:00,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:31:00,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:31:00,998 INFO L87 Difference]: Start difference. First operand 997 states and 1182 transitions. Second operand 8 states. [2020-09-24 19:31:04,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:31:04,826 INFO L93 Difference]: Finished difference Result 2219 states and 2609 transitions. [2020-09-24 19:31:04,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 19:31:04,827 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 235 [2020-09-24 19:31:04,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:31:04,834 INFO L225 Difference]: With dead ends: 2219 [2020-09-24 19:31:04,834 INFO L226 Difference]: Without dead ends: 768 [2020-09-24 19:31:04,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-09-24 19:31:04,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2020-09-24 19:31:04,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 728. [2020-09-24 19:31:04,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 728 states. [2020-09-24 19:31:04,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 790 transitions. [2020-09-24 19:31:04,877 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 790 transitions. Word has length 235 [2020-09-24 19:31:04,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:31:04,882 INFO L479 AbstractCegarLoop]: Abstraction has 728 states and 790 transitions. [2020-09-24 19:31:04,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:31:04,883 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 790 transitions. [2020-09-24 19:31:04,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-09-24 19:31:04,889 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:31:04,889 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 19:31:04,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:31:04,890 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:31:04,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:31:04,891 INFO L82 PathProgramCache]: Analyzing trace with hash 606199573, now seen corresponding path program 1 times [2020-09-24 19:31:04,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:31:04,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352864570] [2020-09-24 19:31:04,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:31:04,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:05,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:05,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:05,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:06,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:06,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-09-24 19:31:06,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:31:06,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1084 [2020-09-24 19:31:06,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:06,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:31:06,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 19:31:06,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-09-24 19:31:06,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:06,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:31:06,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:06,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:06,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:06,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:31:06,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:06,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 19:31:06,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:06,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:31:06,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:06,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 19:31:06,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:06,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:31:06,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:06,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:06,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:06,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-24 19:31:06,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:06,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-09-24 19:31:06,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:06,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:06,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:31:06,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-09-24 19:31:06,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:06,914 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:31:06,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352864570] [2020-09-24 19:31:06,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:31:06,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 19:31:06,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047853757] [2020-09-24 19:31:06,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:31:06,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:31:06,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:31:06,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:31:06,921 INFO L87 Difference]: Start difference. First operand 728 states and 790 transitions. Second operand 7 states. [2020-09-24 19:31:08,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:31:08,659 INFO L93 Difference]: Finished difference Result 1658 states and 1802 transitions. [2020-09-24 19:31:08,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:31:08,660 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 251 [2020-09-24 19:31:08,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:31:08,667 INFO L225 Difference]: With dead ends: 1658 [2020-09-24 19:31:08,667 INFO L226 Difference]: Without dead ends: 945 [2020-09-24 19:31:08,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:31:08,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2020-09-24 19:31:08,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 921. [2020-09-24 19:31:08,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 921 states. [2020-09-24 19:31:08,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 988 transitions. [2020-09-24 19:31:08,696 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 988 transitions. Word has length 251 [2020-09-24 19:31:08,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:31:08,697 INFO L479 AbstractCegarLoop]: Abstraction has 921 states and 988 transitions. [2020-09-24 19:31:08,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:31:08,697 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 988 transitions. [2020-09-24 19:31:08,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-09-24 19:31:08,703 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:31:08,704 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:31:08,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:31:08,704 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:31:08,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:31:08,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1227686243, now seen corresponding path program 1 times [2020-09-24 19:31:08,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:31:08,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459516672] [2020-09-24 19:31:08,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:31:08,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:08,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:09,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:09,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:09,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:10,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:10,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 382 [2020-09-24 19:31:10,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:31:10,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1408 [2020-09-24 19:31:10,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:10,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:10,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-09-24 19:31:10,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-09-24 19:31:10,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:10,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:31:10,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:10,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:10,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:10,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:31:10,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:10,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:31:10,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:10,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:10,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:10,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:10,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:10,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:31:10,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:10,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:10,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:10,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-24 19:31:10,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:10,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-24 19:31:10,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:10,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:31:10,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:10,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-24 19:31:10,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:10,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-24 19:31:10,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:10,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:10,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:11,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-24 19:31:11,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:11,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 418 [2020-09-24 19:31:11,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:11,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:11,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:31:11,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-09-24 19:31:11,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 19:31:11,450 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 204 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:31:11,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [459516672] [2020-09-24 19:31:11,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:31:11,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:31:11,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044712129] [2020-09-24 19:31:11,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:31:11,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:31:11,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:31:11,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:31:11,454 INFO L87 Difference]: Start difference. First operand 921 states and 988 transitions. Second operand 7 states. [2020-09-24 19:31:13,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:31:13,437 INFO L93 Difference]: Finished difference Result 2248 states and 2457 transitions. [2020-09-24 19:31:13,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:31:13,442 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 369 [2020-09-24 19:31:13,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:31:13,450 INFO L225 Difference]: With dead ends: 2248 [2020-09-24 19:31:13,450 INFO L226 Difference]: Without dead ends: 1533 [2020-09-24 19:31:13,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:31:13,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1533 states. [2020-09-24 19:31:13,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1533 to 1500. [2020-09-24 19:31:13,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1500 states. [2020-09-24 19:31:13,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 1599 transitions. [2020-09-24 19:31:13,501 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 1599 transitions. Word has length 369 [2020-09-24 19:31:13,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:31:13,501 INFO L479 AbstractCegarLoop]: Abstraction has 1500 states and 1599 transitions. [2020-09-24 19:31:13,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:31:13,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 1599 transitions. [2020-09-24 19:31:13,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2020-09-24 19:31:13,514 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:31:13,514 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, 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, 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] [2020-09-24 19:31:13,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:31:13,515 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:31:13,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:31:13,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1321120852, now seen corresponding path program 1 times [2020-09-24 19:31:13,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:31:13,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765805788] [2020-09-24 19:31:13,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:31:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:13,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:13,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:14,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:14,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:14,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 527 [2020-09-24 19:31:14,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:31:14,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1009 [2020-09-24 19:31:14,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:14,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:14,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 280 [2020-09-24 19:31:14,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-09-24 19:31:14,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:14,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:31:14,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:14,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:14,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:14,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:31:14,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:14,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:31:14,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:14,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:14,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:14,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:14,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:14,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:31:14,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:14,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:14,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:14,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-24 19:31:14,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:14,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 19:31:14,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:14,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:14,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:14,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:14,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:14,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-24 19:31:14,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:14,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:15,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:15,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-24 19:31:15,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:15,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-09-24 19:31:15,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:15,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:31:15,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:15,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-24 19:31:15,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:15,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-09-24 19:31:15,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:15,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:15,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:15,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-24 19:31:15,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:15,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-09-24 19:31:15,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:15,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:15,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:31:15,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-09-24 19:31:15,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:15,842 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 394 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-09-24 19:31:15,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765805788] [2020-09-24 19:31:15,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:31:15,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:31:15,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182943256] [2020-09-24 19:31:15,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:31:15,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:31:15,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:31:15,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:31:15,845 INFO L87 Difference]: Start difference. First operand 1500 states and 1599 transitions. Second operand 7 states. [2020-09-24 19:31:18,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:31:18,257 INFO L93 Difference]: Finished difference Result 3245 states and 3527 transitions. [2020-09-24 19:31:18,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:31:18,258 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 512 [2020-09-24 19:31:18,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:31:18,268 INFO L225 Difference]: With dead ends: 3245 [2020-09-24 19:31:18,268 INFO L226 Difference]: Without dead ends: 1949 [2020-09-24 19:31:18,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:31:18,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1949 states. [2020-09-24 19:31:18,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1949 to 1890. [2020-09-24 19:31:18,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1890 states. [2020-09-24 19:31:18,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1890 states to 1890 states and 2031 transitions. [2020-09-24 19:31:18,318 INFO L78 Accepts]: Start accepts. Automaton has 1890 states and 2031 transitions. Word has length 512 [2020-09-24 19:31:18,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:31:18,319 INFO L479 AbstractCegarLoop]: Abstraction has 1890 states and 2031 transitions. [2020-09-24 19:31:18,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:31:18,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1890 states and 2031 transitions. [2020-09-24 19:31:18,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 613 [2020-09-24 19:31:18,325 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:31:18,326 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:31:18,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:31:18,326 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:31:18,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:31:18,327 INFO L82 PathProgramCache]: Analyzing trace with hash 456224895, now seen corresponding path program 1 times [2020-09-24 19:31:18,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:31:18,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453864098] [2020-09-24 19:31:18,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:31:18,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:18,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:19,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:19,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:19,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 629 [2020-09-24 19:31:19,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:31:19,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1044 [2020-09-24 19:31:19,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:19,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:19,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 381 [2020-09-24 19:31:19,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-09-24 19:31:19,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:19,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:31:19,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:19,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:19,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:19,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:31:19,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:19,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:31:19,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:19,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:19,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:19,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:19,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:19,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:31:19,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:19,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:19,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:19,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-24 19:31:19,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:19,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 19:31:19,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:19,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:19,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:19,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:19,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:19,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-24 19:31:19,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:19,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:19,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:19,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-24 19:31:19,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:19,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 19:31:19,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:19,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:19,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:19,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:19,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:19,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-09-24 19:31:19,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:19,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:19,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:19,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-24 19:31:19,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:19,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-24 19:31:19,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:19,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:31:19,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:19,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-24 19:31:19,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:19,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2020-09-24 19:31:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:20,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:20,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:20,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-24 19:31:20,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:20,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-09-24 19:31:20,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:20,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:20,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:31:20,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-09-24 19:31:20,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:20,887 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 543 proven. 2 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2020-09-24 19:31:20,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453864098] [2020-09-24 19:31:20,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:31:20,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:31:20,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669419886] [2020-09-24 19:31:20,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:31:20,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:31:20,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:31:20,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:31:20,890 INFO L87 Difference]: Start difference. First operand 1890 states and 2031 transitions. Second operand 7 states. [2020-09-24 19:31:22,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:31:22,828 INFO L93 Difference]: Finished difference Result 4168 states and 4589 transitions. [2020-09-24 19:31:22,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:31:22,830 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 612 [2020-09-24 19:31:22,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:31:22,843 INFO L225 Difference]: With dead ends: 4168 [2020-09-24 19:31:22,843 INFO L226 Difference]: Without dead ends: 2675 [2020-09-24 19:31:22,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:31:22,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2675 states. [2020-09-24 19:31:22,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2675 to 2658. [2020-09-24 19:31:22,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2658 states. [2020-09-24 19:31:22,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2658 states to 2658 states and 2883 transitions. [2020-09-24 19:31:22,913 INFO L78 Accepts]: Start accepts. Automaton has 2658 states and 2883 transitions. Word has length 612 [2020-09-24 19:31:22,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:31:22,915 INFO L479 AbstractCegarLoop]: Abstraction has 2658 states and 2883 transitions. [2020-09-24 19:31:22,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:31:22,915 INFO L276 IsEmpty]: Start isEmpty. Operand 2658 states and 2883 transitions. [2020-09-24 19:31:22,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2020-09-24 19:31:22,923 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:31:22,924 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 19:31:22,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:31:22,925 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:31:22,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:31:22,925 INFO L82 PathProgramCache]: Analyzing trace with hash -310196273, now seen corresponding path program 1 times [2020-09-24 19:31:22,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:31:22,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330715890] [2020-09-24 19:31:22,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:31:23,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:23,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:23,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:23,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:24,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:24,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 715 [2020-09-24 19:31:24,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:31:24,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1190 [2020-09-24 19:31:24,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:24,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:24,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-09-24 19:31:24,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-24 19:31:24,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:24,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:31:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:24,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:24,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:24,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:31:24,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:24,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:31:24,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:24,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:24,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:24,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:24,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:24,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:31:24,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:24,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:24,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:24,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-24 19:31:24,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:24,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-24 19:31:24,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:24,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:31:24,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:24,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-24 19:31:24,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:24,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-24 19:31:24,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:24,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:24,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:24,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-24 19:31:24,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:24,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-09-24 19:31:24,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:24,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:24,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:31:24,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-24 19:31:24,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:25,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-09-24 19:31:25,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:25,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:25,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:25,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-24 19:31:25,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:25,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-24 19:31:25,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:25,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:25,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 179 [2020-09-24 19:31:25,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:25,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:25,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2020-09-24 19:31:25,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:25,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:25,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:25,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-24 19:31:25,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:25,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-24 19:31:25,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:25,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:25,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 182 [2020-09-24 19:31:25,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:25,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:26,056 INFO L134 CoverageAnalysis]: Checked inductivity of 993 backedges. 317 proven. 262 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2020-09-24 19:31:26,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330715890] [2020-09-24 19:31:26,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:31:26,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:31:26,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24184692] [2020-09-24 19:31:26,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:31:26,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:31:26,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:31:26,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:31:26,060 INFO L87 Difference]: Start difference. First operand 2658 states and 2883 transitions. Second operand 8 states. [2020-09-24 19:31:28,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:31:28,505 INFO L93 Difference]: Finished difference Result 5122 states and 5579 transitions. [2020-09-24 19:31:28,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:31:28,507 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 698 [2020-09-24 19:31:28,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:31:28,520 INFO L225 Difference]: With dead ends: 5122 [2020-09-24 19:31:28,520 INFO L226 Difference]: Without dead ends: 2861 [2020-09-24 19:31:28,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:31:28,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2861 states. [2020-09-24 19:31:28,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2861 to 2658. [2020-09-24 19:31:28,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2658 states. [2020-09-24 19:31:28,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2658 states to 2658 states and 2880 transitions. [2020-09-24 19:31:28,588 INFO L78 Accepts]: Start accepts. Automaton has 2658 states and 2880 transitions. Word has length 698 [2020-09-24 19:31:28,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:31:28,589 INFO L479 AbstractCegarLoop]: Abstraction has 2658 states and 2880 transitions. [2020-09-24 19:31:28,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:31:28,590 INFO L276 IsEmpty]: Start isEmpty. Operand 2658 states and 2880 transitions. [2020-09-24 19:31:28,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 781 [2020-09-24 19:31:28,600 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:31:28,601 INFO L422 BasicCegarLoop]: trace histogram [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, 6, 6, 6, 6, 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 19:31:28,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:31:28,602 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:31:28,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:31:28,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1830394889, now seen corresponding path program 1 times [2020-09-24 19:31:28,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:31:28,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831459822] [2020-09-24 19:31:28,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:31:28,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:29,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:29,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:29,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 799 [2020-09-24 19:31:29,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:29,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-24 19:31:29,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:29,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:29,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 742 [2020-09-24 19:31:29,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 19:31:29,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:30,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:31:30,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:30,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:30,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:30,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:31:30,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:30,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:31:30,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:30,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:30,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:30,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:30,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:30,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:31:30,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:30,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:30,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:30,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-24 19:31:30,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:30,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 19:31:30,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:30,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:30,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:30,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:30,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:30,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-24 19:31:30,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:30,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:30,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:30,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-24 19:31:30,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:30,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-24 19:31:30,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:30,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:30,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:30,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:30,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:30,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-09-24 19:31:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:30,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:30,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:30,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-24 19:31:30,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:30,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 19:31:30,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:30,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:30,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:30,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:30,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:30,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2020-09-24 19:31:30,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:30,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:30,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:30,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-24 19:31:30,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:30,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 19:31:30,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:30,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:30,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:30,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:30,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:30,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2020-09-24 19:31:30,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:30,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:30,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:30,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-24 19:31:30,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:30,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-24 19:31:30,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:30,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:31:30,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:30,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-09-24 19:31:30,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:30,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1449 backedges. 245 proven. 5 refuted. 0 times theorem prover too weak. 1199 trivial. 0 not checked. [2020-09-24 19:31:30,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831459822] [2020-09-24 19:31:30,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:31:30,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:31:30,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955399738] [2020-09-24 19:31:30,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:31:30,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:31:30,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:31:30,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:31:30,953 INFO L87 Difference]: Start difference. First operand 2658 states and 2880 transitions. Second operand 5 states. [2020-09-24 19:31:32,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:31:32,703 INFO L93 Difference]: Finished difference Result 6082 states and 6730 transitions. [2020-09-24 19:31:32,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:31:32,704 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 780 [2020-09-24 19:31:32,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:31:32,720 INFO L225 Difference]: With dead ends: 6082 [2020-09-24 19:31:32,721 INFO L226 Difference]: Without dead ends: 3632 [2020-09-24 19:31:32,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:31:32,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3632 states. [2020-09-24 19:31:32,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3632 to 3613. [2020-09-24 19:31:32,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3613 states. [2020-09-24 19:31:32,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3613 states to 3613 states and 3989 transitions. [2020-09-24 19:31:32,805 INFO L78 Accepts]: Start accepts. Automaton has 3613 states and 3989 transitions. Word has length 780 [2020-09-24 19:31:32,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:31:32,806 INFO L479 AbstractCegarLoop]: Abstraction has 3613 states and 3989 transitions. [2020-09-24 19:31:32,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:31:32,807 INFO L276 IsEmpty]: Start isEmpty. Operand 3613 states and 3989 transitions. [2020-09-24 19:31:32,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 865 [2020-09-24 19:31:32,818 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:31:32,819 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, 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, 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, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 19:31:32,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 19:31:32,820 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:31:32,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:31:32,820 INFO L82 PathProgramCache]: Analyzing trace with hash 2021450459, now seen corresponding path program 1 times [2020-09-24 19:31:32,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:31:32,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572977637] [2020-09-24 19:31:32,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:31:32,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:33,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:33,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:33,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:34,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:34,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 885 [2020-09-24 19:31:34,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:31:34,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1082 [2020-09-24 19:31:34,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:34,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:34,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 829 [2020-09-24 19:31:34,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-24 19:31:34,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:34,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:31:34,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:34,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:34,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:34,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:31:34,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:34,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:31:34,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:34,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:34,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:34,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:34,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:34,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:31:34,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:34,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:34,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:34,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-24 19:31:34,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:34,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 19:31:34,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:34,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:34,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:34,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:34,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:34,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-24 19:31:34,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:34,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:34,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:34,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-24 19:31:34,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:34,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 19:31:34,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:34,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:34,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:34,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:34,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:34,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-09-24 19:31:34,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:34,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:34,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:34,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-24 19:31:34,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:34,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 19:31:34,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:34,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:34,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:34,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:34,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:34,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2020-09-24 19:31:34,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:34,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:34,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:34,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-24 19:31:34,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:34,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-24 19:31:34,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:34,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:34,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:34,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:34,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:34,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2020-09-24 19:31:34,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:34,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:34,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:34,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-24 19:31:34,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:34,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 19:31:34,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:34,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:34,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:34,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:34,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:34,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 739 [2020-09-24 19:31:34,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:34,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:34,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:34,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 19:31:34,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:34,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-24 19:31:34,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:34,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:31:34,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:34,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 19:31:34,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:35,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1895 backedges. 295 proven. 6 refuted. 0 times theorem prover too weak. 1594 trivial. 0 not checked. [2020-09-24 19:31:35,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572977637] [2020-09-24 19:31:35,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:31:35,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:31:35,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972993919] [2020-09-24 19:31:35,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:31:35,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:31:35,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:31:35,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:31:35,306 INFO L87 Difference]: Start difference. First operand 3613 states and 3989 transitions. Second operand 5 states. [2020-09-24 19:31:37,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:31:37,239 INFO L93 Difference]: Finished difference Result 7837 states and 8787 transitions. [2020-09-24 19:31:37,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:31:37,239 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 864 [2020-09-24 19:31:37,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:31:37,259 INFO L225 Difference]: With dead ends: 7837 [2020-09-24 19:31:37,259 INFO L226 Difference]: Without dead ends: 4432 [2020-09-24 19:31:37,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:31:37,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4432 states. [2020-09-24 19:31:37,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4432 to 4377. [2020-09-24 19:31:37,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4377 states. [2020-09-24 19:31:37,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4377 states to 4377 states and 4851 transitions. [2020-09-24 19:31:37,370 INFO L78 Accepts]: Start accepts. Automaton has 4377 states and 4851 transitions. Word has length 864 [2020-09-24 19:31:37,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:31:37,371 INFO L479 AbstractCegarLoop]: Abstraction has 4377 states and 4851 transitions. [2020-09-24 19:31:37,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:31:37,371 INFO L276 IsEmpty]: Start isEmpty. Operand 4377 states and 4851 transitions. [2020-09-24 19:31:37,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 884 [2020-09-24 19:31:37,385 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:31:37,385 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, 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, 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, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 19:31:37,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 19:31:37,386 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:31:37,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:31:37,386 INFO L82 PathProgramCache]: Analyzing trace with hash 473626704, now seen corresponding path program 1 times [2020-09-24 19:31:37,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:31:37,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689271793] [2020-09-24 19:31:37,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY