/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:29:09,743 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:29:09,747 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:29:09,773 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:29:09,774 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:29:09,775 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:29:09,777 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:29:09,779 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:29:09,781 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:29:09,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:29:09,786 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:29:09,791 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:29:09,791 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:29:09,792 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:29:09,795 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:29:09,796 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:29:09,797 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:29:09,798 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:29:09,800 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:29:09,802 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:29:09,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:29:09,805 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:29:09,807 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:29:09,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:29:09,810 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:29:09,810 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:29:09,811 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:29:09,812 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:29:09,812 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:29:09,814 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:29:09,814 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:29:09,815 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:29:09,816 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:29:09,817 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:29:09,818 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:29:09,818 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:29:09,819 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:29:09,819 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:29:09,819 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:29:09,821 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:29:09,822 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:29:09,823 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 13:29:09,854 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:29:09,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:29:09,857 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:29:09,857 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:29:09,857 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:29:09,857 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:29:09,858 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:29:09,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:29:09,858 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:29:09,858 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:29:09,859 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:29:09,860 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:29:09,860 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:29:09,860 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:29:09,861 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:29:09,862 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:29:09,862 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:29:09,862 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:29:09,862 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:29:09,862 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:29:09,863 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:29:09,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:29:09,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:29:09,864 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:29:09,864 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:29:09,864 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:29:09,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:29:09,864 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:29:09,865 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:29:09,865 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:29:10,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:29:10,386 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:29:10,390 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:29:10,392 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:29:10,392 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:29:10,394 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label31.c [2020-09-25 13:29:10,488 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5bf383c4/46a76120d3954703b8afb9a6fe8bd194/FLAG839edd935 [2020-09-25 13:29:11,177 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:29:11,178 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label31.c [2020-09-25 13:29:11,198 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5bf383c4/46a76120d3954703b8afb9a6fe8bd194/FLAG839edd935 [2020-09-25 13:29:11,392 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5bf383c4/46a76120d3954703b8afb9a6fe8bd194 [2020-09-25 13:29:11,406 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:29:11,412 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:29:11,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:29:11,414 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:29:11,421 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:29:11,422 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:29:11" (1/1) ... [2020-09-25 13:29:11,427 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70996f09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:11, skipping insertion in model container [2020-09-25 13:29:11,427 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:29:11" (1/1) ... [2020-09-25 13:29:11,437 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:29:11,517 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:29:12,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:29:12,129 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:29:12,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:29:12,342 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:29:12,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:12 WrapperNode [2020-09-25 13:29:12,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:29:12,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:29:12,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:29:12,344 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:29:12,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:12" (1/1) ... [2020-09-25 13:29:12,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:12" (1/1) ... [2020-09-25 13:29:12,386 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:12" (1/1) ... [2020-09-25 13:29:12,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:12" (1/1) ... [2020-09-25 13:29:12,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:12" (1/1) ... [2020-09-25 13:29:12,475 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:12" (1/1) ... [2020-09-25 13:29:12,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:12" (1/1) ... [2020-09-25 13:29:12,488 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:29:12,489 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:29:12,489 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:29:12,489 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:29:12,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:12" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:29:12,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:29:12,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:29:12,595 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:29:12,595 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:29:12,595 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:29:12,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:29:12,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:29:12,596 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:29:12,596 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:29:12,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:29:12,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:29:13,947 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:29:13,947 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:29:13,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:29:13 BoogieIcfgContainer [2020-09-25 13:29:13,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:29:13,958 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:29:13,958 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:29:13,962 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:29:13,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:29:11" (1/3) ... [2020-09-25 13:29:13,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62dccd17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:29:13, skipping insertion in model container [2020-09-25 13:29:13,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:12" (2/3) ... [2020-09-25 13:29:13,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62dccd17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:29:13, skipping insertion in model container [2020-09-25 13:29:13,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:29:13" (3/3) ... [2020-09-25 13:29:13,967 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label31.c [2020-09-25 13:29:13,980 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:29:13,993 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:29:14,017 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:29:14,057 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:29:14,057 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:29:14,057 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:29:14,057 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:29:14,058 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:29:14,058 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:29:14,058 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:29:14,058 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:29:14,093 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 13:29:14,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-09-25 13:29:14,113 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:14,115 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:29:14,115 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:14,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:14,124 INFO L82 PathProgramCache]: Analyzing trace with hash -21747025, now seen corresponding path program 1 times [2020-09-25 13:29:14,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:14,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224267661] [2020-09-25 13:29:14,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:14,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:14,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:15,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:15,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:16,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:16,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:17,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:19,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:19,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-25 13:29:19,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:29:19,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 13:29:19,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:19,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:19,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:29:19,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 13:29:19,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 13:29:19,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:29:19,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:19,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:19,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:19,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:19,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:19,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:19,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 13:29:19,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:19,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:19,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:29:19,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:19,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 13:29:19,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:19,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:29:19,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [224267661] [2020-09-25 13:29:19,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:29:19,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:29:19,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541872402] [2020-09-25 13:29:19,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:29:19,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:19,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:29:19,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:29:19,809 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 13:29:21,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:21,924 INFO L93 Difference]: Finished difference Result 1340 states and 1738 transitions. [2020-09-25 13:29:21,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:29:21,926 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-09-25 13:29:21,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:21,951 INFO L225 Difference]: With dead ends: 1340 [2020-09-25 13:29:21,952 INFO L226 Difference]: Without dead ends: 741 [2020-09-25 13:29:21,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:29:21,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-25 13:29:22,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-09-25 13:29:22,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 13:29:22,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 13:29:22,103 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 120 [2020-09-25 13:29:22,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:22,104 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 13:29:22,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:29:22,104 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 13:29:22,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 13:29:22,112 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:22,112 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:29:22,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:29:22,113 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:22,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:22,114 INFO L82 PathProgramCache]: Analyzing trace with hash -858442752, now seen corresponding path program 1 times [2020-09-25 13:29:22,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:22,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784722118] [2020-09-25 13:29:22,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:22,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:22,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:22,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:22,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:22,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:22,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:25,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:25,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-25 13:29:25,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:29:25,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3172 [2020-09-25 13:29:25,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:25,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:25,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:29:25,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 13:29:25,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 13:29:25,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:25,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:25,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:25,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:25,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:25,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:25,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:25,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:29:25,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:25,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:25,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:29:25,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:25,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:29:25,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:25,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:29:25,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:25,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:25,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:25,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 13:29:25,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:25,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 13:29:25,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:25,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:25,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:29:25,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:25,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:29:25,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:25,544 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:29:25,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [784722118] [2020-09-25 13:29:25,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:29:25,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:29:25,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293612561] [2020-09-25 13:29:25,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:29:25,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:25,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:29:25,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:29:25,548 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 5 states. [2020-09-25 13:29:27,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:27,716 INFO L93 Difference]: Finished difference Result 1677 states and 2045 transitions. [2020-09-25 13:29:27,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:29:27,718 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-09-25 13:29:27,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:27,728 INFO L225 Difference]: With dead ends: 1677 [2020-09-25 13:29:27,731 INFO L226 Difference]: Without dead ends: 1037 [2020-09-25 13:29:27,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:29:27,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2020-09-25 13:29:27,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 950. [2020-09-25 13:29:27,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-09-25 13:29:27,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1136 transitions. [2020-09-25 13:29:27,782 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1136 transitions. Word has length 141 [2020-09-25 13:29:27,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:27,783 INFO L479 AbstractCegarLoop]: Abstraction has 950 states and 1136 transitions. [2020-09-25 13:29:27,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:29:27,784 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1136 transitions. [2020-09-25 13:29:27,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-25 13:29:27,790 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:27,790 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:29:27,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:29:27,791 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:27,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:27,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1279661441, now seen corresponding path program 1 times [2020-09-25 13:29:27,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:27,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786956244] [2020-09-25 13:29:27,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:27,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:27,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:27,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:28,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:28,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:28,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:28,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:28,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:28,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:30,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:30,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:30,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:32,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:32,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 13:29:32,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 13:29:32,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 13:29:32,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:32,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:32,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:29:32,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 13:29:32,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 13:29:32,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:32,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:32,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:32,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:33,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:33,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:33,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:33,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:29:33,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:33,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:33,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:29:33,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:33,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:29:33,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:33,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:29:33,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:33,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:33,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:33,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 13:29:33,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:33,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 13:29:33,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:33,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:33,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:29:33,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:33,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 13:29:33,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:29:33,147 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:29:33,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786956244] [2020-09-25 13:29:33,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:29:33,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:29:33,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379706406] [2020-09-25 13:29:33,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:29:33,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:33,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:29:33,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:29:33,151 INFO L87 Difference]: Start difference. First operand 950 states and 1136 transitions. Second operand 5 states. [2020-09-25 13:29:35,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:35,169 INFO L93 Difference]: Finished difference Result 2227 states and 2746 transitions. [2020-09-25 13:29:35,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:29:35,169 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-09-25 13:29:35,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:35,177 INFO L225 Difference]: With dead ends: 2227 [2020-09-25 13:29:35,178 INFO L226 Difference]: Without dead ends: 1301 [2020-09-25 13:29:35,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:29:35,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1301 states. [2020-09-25 13:29:35,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1301 to 1236. [2020-09-25 13:29:35,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1236 states. [2020-09-25 13:29:35,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1497 transitions. [2020-09-25 13:29:35,224 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1497 transitions. Word has length 148 [2020-09-25 13:29:35,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:35,225 INFO L479 AbstractCegarLoop]: Abstraction has 1236 states and 1497 transitions. [2020-09-25 13:29:35,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:29:35,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1497 transitions. [2020-09-25 13:29:35,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-25 13:29:35,231 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:35,231 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:29:35,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:29:35,232 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:35,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:35,232 INFO L82 PathProgramCache]: Analyzing trace with hash -2085320629, now seen corresponding path program 1 times [2020-09-25 13:29:35,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:35,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116651537] [2020-09-25 13:29:35,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:35,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:35,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:35,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:35,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:36,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:36,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:36,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:40,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:40,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-25 13:29:40,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:29:40,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 13:29:40,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:40,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:40,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:29:40,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 13:29:40,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 13:29:40,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:29:40,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:40,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:40,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:40,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:40,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:40,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:40,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 13:29:40,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:40,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:40,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:29:40,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:40,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 13:29:40,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:40,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:29:40,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:40,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:40,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:40,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:40,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 13:29:40,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:29:40,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 13:29:40,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:40,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:40,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:29:40,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:29:40,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 13:29:40,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:40,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 13:29:40,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:40,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:40,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:40,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:29:40,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:40,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 13:29:40,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:40,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:40,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:29:40,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:29:40,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 13:29:40,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:40,833 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:29:40,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116651537] [2020-09-25 13:29:40,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:29:40,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 13:29:40,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339168805] [2020-09-25 13:29:40,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:29:40,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:40,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:29:40,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:29:40,840 INFO L87 Difference]: Start difference. First operand 1236 states and 1497 transitions. Second operand 10 states. [2020-09-25 13:29:41,162 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-09-25 13:29:42,722 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2020-09-25 13:29:44,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:44,974 INFO L93 Difference]: Finished difference Result 3530 states and 4496 transitions. [2020-09-25 13:29:44,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 13:29:44,975 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 170 [2020-09-25 13:29:44,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:44,995 INFO L225 Difference]: With dead ends: 3530 [2020-09-25 13:29:44,995 INFO L226 Difference]: Without dead ends: 2318 [2020-09-25 13:29:45,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2020-09-25 13:29:45,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2318 states. [2020-09-25 13:29:45,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2318 to 2211. [2020-09-25 13:29:45,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2211 states. [2020-09-25 13:29:45,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2211 states to 2211 states and 2689 transitions. [2020-09-25 13:29:45,102 INFO L78 Accepts]: Start accepts. Automaton has 2211 states and 2689 transitions. Word has length 170 [2020-09-25 13:29:45,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:45,102 INFO L479 AbstractCegarLoop]: Abstraction has 2211 states and 2689 transitions. [2020-09-25 13:29:45,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 13:29:45,103 INFO L276 IsEmpty]: Start isEmpty. Operand 2211 states and 2689 transitions. [2020-09-25 13:29:45,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-09-25 13:29:45,115 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:45,115 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:29:45,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:29:45,116 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:45,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:45,116 INFO L82 PathProgramCache]: Analyzing trace with hash -224267286, now seen corresponding path program 1 times [2020-09-25 13:29:45,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:45,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351290362] [2020-09-25 13:29:45,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:45,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:45,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:45,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:46,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:46,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:46,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:47,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:49,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:50,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:50,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-09-25 13:29:50,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:29:50,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 13:29:50,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:50,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:50,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:29:50,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 13:29:50,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 13:29:50,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:50,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:50,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:50,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:50,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:50,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:50,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:50,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:29:50,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:50,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:50,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:29:50,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:50,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:29:50,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:29:50,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:29:50,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:50,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:50,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:50,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 13:29:50,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:50,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 13:29:50,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:50,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:50,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:29:50,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:50,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:29:50,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:50,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 13:29:50,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:50,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:50,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:50,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 13:29:50,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:50,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-25 13:29:50,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:50,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:50,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:29:50,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:29:50,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 13:29:50,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:50,698 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 78 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:29:50,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351290362] [2020-09-25 13:29:50,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:29:50,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:29:50,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565801710] [2020-09-25 13:29:50,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:29:50,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:50,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:29:50,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:29:50,703 INFO L87 Difference]: Start difference. First operand 2211 states and 2689 transitions. Second operand 7 states. [2020-09-25 13:29:52,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:52,767 INFO L93 Difference]: Finished difference Result 6282 states and 7939 transitions. [2020-09-25 13:29:52,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:29:52,768 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 202 [2020-09-25 13:29:52,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:52,803 INFO L225 Difference]: With dead ends: 6282 [2020-09-25 13:29:52,803 INFO L226 Difference]: Without dead ends: 4095 [2020-09-25 13:29:52,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:29:52,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4095 states. [2020-09-25 13:29:52,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4095 to 3928. [2020-09-25 13:29:52,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3928 states. [2020-09-25 13:29:52,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3928 states to 3928 states and 4826 transitions. [2020-09-25 13:29:52,976 INFO L78 Accepts]: Start accepts. Automaton has 3928 states and 4826 transitions. Word has length 202 [2020-09-25 13:29:52,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:52,977 INFO L479 AbstractCegarLoop]: Abstraction has 3928 states and 4826 transitions. [2020-09-25 13:29:52,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:29:52,977 INFO L276 IsEmpty]: Start isEmpty. Operand 3928 states and 4826 transitions. [2020-09-25 13:29:52,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-09-25 13:29:52,994 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:52,994 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 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] [2020-09-25 13:29:52,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:29:52,995 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:52,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:52,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1451108919, now seen corresponding path program 1 times [2020-09-25 13:29:52,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:52,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029043732] [2020-09-25 13:29:52,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:53,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:53,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:53,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:53,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:53,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:54,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:54,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:57,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:58,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:58,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-09-25 13:29:58,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:29:58,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 13:29:58,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:58,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:58,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:29:58,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-25 13:29:58,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 13:29:58,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:29:58,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:58,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:58,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:58,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:58,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:58,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:29:58,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:58,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:58,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:29:58,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:58,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:29:58,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:58,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:29:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:58,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:58,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:58,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 13:29:58,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:58,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:29:58,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:58,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:58,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:29:58,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:58,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:29:58,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:58,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 13:29:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:58,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:58,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:58,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:29:58,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:58,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 13:29:58,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:58,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:58,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:29:58,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:58,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 13:29:58,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:29:58,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-25 13:29:58,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:58,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:58,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:58,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 13:29:58,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:58,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-25 13:29:58,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:58,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:58,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:29:58,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:29:58,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 13:29:58,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:29:58,513 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 139 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-25 13:29:58,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029043732] [2020-09-25 13:29:58,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:29:58,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:29:58,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358887393] [2020-09-25 13:29:58,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:29:58,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:58,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:29:58,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:29:58,515 INFO L87 Difference]: Start difference. First operand 3928 states and 4826 transitions. Second operand 7 states.