/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=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label35.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 23:56:50,852 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 23:56:50,855 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 23:56:50,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 23:56:50,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 23:56:50,883 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 23:56:50,884 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 23:56:50,886 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 23:56:50,888 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 23:56:50,889 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 23:56:50,890 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 23:56:50,892 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 23:56:50,892 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 23:56:50,893 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 23:56:50,895 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 23:56:50,896 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 23:56:50,897 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 23:56:50,898 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 23:56:50,900 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 23:56:50,902 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 23:56:50,904 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 23:56:50,905 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 23:56:50,907 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 23:56:50,908 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 23:56:50,910 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 23:56:50,911 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 23:56:50,911 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 23:56:50,912 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 23:56:50,913 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 23:56:50,914 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 23:56:50,914 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 23:56:50,915 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 23:56:50,916 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 23:56:50,917 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 23:56:50,918 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 23:56:50,918 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 23:56:50,919 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 23:56:50,919 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 23:56:50,920 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 23:56:50,921 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 23:56:50,922 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 23:56:50,922 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 23:56:50,950 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 23:56:50,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 23:56:50,952 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 23:56:50,952 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 23:56:50,952 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 23:56:50,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 23:56:50,952 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 23:56:50,953 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 23:56:50,953 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 23:56:50,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 23:56:50,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 23:56:50,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 23:56:50,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 23:56:50,954 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 23:56:50,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 23:56:50,954 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 23:56:50,954 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 23:56:50,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 23:56:50,955 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 23:56:50,955 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 23:56:50,955 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 23:56:50,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:56:50,956 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 23:56:50,956 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 23:56:50,956 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 23:56:50,956 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 23:56:50,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 23:56:50,957 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 23:56:50,957 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 23:56:50,957 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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;log-additional-information=true; [2020-09-24 23:56:51,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 23:56:51,463 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 23:56:51,467 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 23:56:51,469 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 23:56:51,471 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 23:56:51,472 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label35.c [2020-09-24 23:56:51,546 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c48055ec4/8b27eec5e89c4944bb7b0fc1cdffadd7/FLAG0eee8dec3 [2020-09-24 23:56:52,228 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 23:56:52,229 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label35.c [2020-09-24 23:56:52,246 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c48055ec4/8b27eec5e89c4944bb7b0fc1cdffadd7/FLAG0eee8dec3 [2020-09-24 23:56:52,460 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c48055ec4/8b27eec5e89c4944bb7b0fc1cdffadd7 [2020-09-24 23:56:52,473 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 23:56:52,479 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 23:56:52,481 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 23:56:52,481 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 23:56:52,487 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 23:56:52,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:56:52" (1/1) ... [2020-09-24 23:56:52,493 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d876c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:56:52, skipping insertion in model container [2020-09-24 23:56:52,493 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:56:52" (1/1) ... [2020-09-24 23:56:52,504 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 23:56:52,571 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 23:56:53,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:56:53,030 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 23:56:53,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:56:53,291 INFO L208 MainTranslator]: Completed translation [2020-09-24 23:56:53,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:56:53 WrapperNode [2020-09-24 23:56:53,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 23:56:53,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 23:56:53,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 23:56:53,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 23:56:53,311 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:56:53" (1/1) ... [2020-09-24 23:56:53,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:56:53" (1/1) ... [2020-09-24 23:56:53,331 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:56:53" (1/1) ... [2020-09-24 23:56:53,332 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:56:53" (1/1) ... [2020-09-24 23:56:53,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:56:53" (1/1) ... [2020-09-24 23:56:53,387 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:56:53" (1/1) ... [2020-09-24 23:56:53,392 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:56:53" (1/1) ... [2020-09-24 23:56:53,399 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 23:56:53,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 23:56:53,400 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 23:56:53,400 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 23:56:53,402 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:56:53" (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 23:56:53,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 23:56:53,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 23:56:53,478 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 23:56:53,478 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 23:56:53,478 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 23:56:53,479 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 23:56:53,479 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 23:56:53,479 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 23:56:53,479 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 23:56:53,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 23:56:53,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 23:56:54,804 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 23:56:54,804 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 23:56:54,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:56:54 BoogieIcfgContainer [2020-09-24 23:56:54,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 23:56:54,814 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 23:56:54,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 23:56:54,818 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 23:56:54,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:56:52" (1/3) ... [2020-09-24 23:56:54,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb4822a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:56:54, skipping insertion in model container [2020-09-24 23:56:54,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:56:53" (2/3) ... [2020-09-24 23:56:54,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb4822a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:56:54, skipping insertion in model container [2020-09-24 23:56:54,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:56:54" (3/3) ... [2020-09-24 23:56:54,823 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label35.c [2020-09-24 23:56:54,834 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 23:56:54,845 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 23:56:54,867 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 23:56:54,902 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 23:56:54,902 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 23:56:54,902 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 23:56:54,902 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 23:56:54,903 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 23:56:54,903 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 23:56:54,903 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 23:56:54,903 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 23:56:54,935 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 23:56:54,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-09-24 23:56:54,954 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:56:54,956 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] [2020-09-24 23:56:54,956 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:56:54,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:56:54,964 INFO L82 PathProgramCache]: Analyzing trace with hash -691491799, now seen corresponding path program 1 times [2020-09-24 23:56:54,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:56:54,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087928403] [2020-09-24 23:56:54,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:56:55,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:56:55,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:56:55,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:56:55,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:56:55,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:56:57,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:56:57,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:56:59,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:56:59,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:57:00,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:57:00,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-24 23:57:00,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 23:57:00,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-24 23:57:00,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:57:00,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 23:57:00,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 23:57:00,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-24 23:57:00,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 23:57:01,067 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 36 [2020-09-24 23:57:01,218 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 39 [2020-09-24 23:57:01,372 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-09-24 23:57:01,544 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 37 [2020-09-24 23:57:01,695 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 32 [2020-09-24 23:57:01,862 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 31 [2020-09-24 23:57:01,998 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 31 [2020-09-24 23:57:02,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:57:02,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:57:02,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:57:02,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:57:02,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 23:57:02,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:57:02,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-24 23:57:02,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:57:02,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:57:02,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:57:02,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 23:57:02,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:57:02,837 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 23:57:02,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087928403] [2020-09-24 23:57:02,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:57:02,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2020-09-24 23:57:02,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229941105] [2020-09-24 23:57:02,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-24 23:57:02,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:57:02,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-24 23:57:02,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2020-09-24 23:57:02,870 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 21 states. [2020-09-24 23:57:03,773 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 83 [2020-09-24 23:57:04,092 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 86 [2020-09-24 23:57:04,355 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2020-09-24 23:57:04,853 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2020-09-24 23:57:05,436 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2020-09-24 23:57:05,875 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2020-09-24 23:57:06,135 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 76 [2020-09-24 23:57:06,432 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2020-09-24 23:57:06,684 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-09-24 23:57:06,925 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2020-09-24 23:57:07,233 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2020-09-24 23:57:07,886 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2020-09-24 23:57:08,054 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-09-24 23:57:08,413 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-09-24 23:57:09,050 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2020-09-24 23:57:09,527 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-09-24 23:57:09,832 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-09-24 23:57:10,260 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2020-09-24 23:57:10,521 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-09-24 23:57:11,606 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-09-24 23:57:12,254 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-09-24 23:57:13,018 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2020-09-24 23:57:13,923 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-09-24 23:57:14,338 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2020-09-24 23:57:15,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:57:15,689 INFO L93 Difference]: Finished difference Result 1741 states and 2475 transitions. [2020-09-24 23:57:15,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-09-24 23:57:15,692 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 120 [2020-09-24 23:57:15,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:57:15,721 INFO L225 Difference]: With dead ends: 1741 [2020-09-24 23:57:15,721 INFO L226 Difference]: Without dead ends: 1007 [2020-09-24 23:57:15,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1137 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=1084, Invalid=2948, Unknown=0, NotChecked=0, Total=4032 [2020-09-24 23:57:15,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2020-09-24 23:57:15,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 892. [2020-09-24 23:57:15,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 892 states. [2020-09-24 23:57:15,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1066 transitions. [2020-09-24 23:57:15,867 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1066 transitions. Word has length 120 [2020-09-24 23:57:15,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:57:15,868 INFO L479 AbstractCegarLoop]: Abstraction has 892 states and 1066 transitions. [2020-09-24 23:57:15,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-24 23:57:15,868 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1066 transitions. [2020-09-24 23:57:15,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 23:57:15,880 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:57:15,880 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 23:57:15,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 23:57:15,881 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:57:15,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:57:15,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1366531083, now seen corresponding path program 1 times [2020-09-24 23:57:15,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:57:15,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119840449] [2020-09-24 23:57:15,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:57:15,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:57:15,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:57:16,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:57:16,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:57:17,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:57:17,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:57:18,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:57:18,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:57:19,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:57:20,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:57:20,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:57:20,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-24 23:57:20,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 23:57:20,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-24 23:57:20,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:57:20,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-24 23:57:20,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 23:57:20,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-24 23:57:20,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:57:21,930 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 38 [2020-09-24 23:57:22,245 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 44 [2020-09-24 23:57:22,476 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 42 [2020-09-24 23:57:22,792 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 45 [2020-09-24 23:57:23,098 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 42 [2020-09-24 23:57:23,303 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 41 [2020-09-24 23:57:23,547 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 42 [2020-09-24 23:57:23,869 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 42 [2020-09-24 23:57:24,172 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 45 [2020-09-24 23:57:24,431 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 37 [2020-09-24 23:57:24,683 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 36 [2020-09-24 23:57:24,933 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 35 [2020-09-24 23:57:25,167 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 32 [2020-09-24 23:57:25,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:57:25,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:57:25,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:57:25,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:57:25,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 23:57:25,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:57:25,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-24 23:57:25,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:57:25,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:57:25,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:57:25,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 23:57:25,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:57:25,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 23:57:25,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:57:25,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:57:25,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:57:25,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 23:57:25,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:57:25,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-24 23:57:25,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:57:25,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:57:25,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:57:25,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 23:57:25,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:57:25,822 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:57:25,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119840449] [2020-09-24 23:57:25,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:57:25,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-24 23:57:25,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367975822] [2020-09-24 23:57:25,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-24 23:57:25,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:57:25,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-24 23:57:25,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=538, Unknown=0, NotChecked=0, Total=702 [2020-09-24 23:57:25,835 INFO L87 Difference]: Start difference. First operand 892 states and 1066 transitions. Second operand 27 states. [2020-09-24 23:57:27,174 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 86 [2020-09-24 23:57:27,523 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 88 [2020-09-24 23:57:27,845 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 81 [2020-09-24 23:57:28,320 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 88 [2020-09-24 23:57:28,697 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 81 [2020-09-24 23:57:29,293 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-09-24 23:57:29,928 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-09-24 23:57:30,141 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-09-24 23:57:30,534 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2020-09-24 23:57:31,125 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2020-09-24 23:57:31,555 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 89 [2020-09-24 23:57:32,128 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-09-24 23:57:32,631 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2020-09-24 23:57:32,902 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 89 [2020-09-24 23:57:33,160 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-09-24 23:57:33,491 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 90 [2020-09-24 23:57:33,656 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-09-24 23:57:33,902 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2020-09-24 23:57:34,230 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 83 [2020-09-24 23:57:34,549 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 84 [2020-09-24 23:57:34,902 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 83 [2020-09-24 23:57:35,235 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 83 [2020-09-24 23:57:35,535 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2020-09-24 23:57:36,096 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-09-24 23:57:36,338 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2020-09-24 23:57:36,547 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-09-24 23:57:37,469 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2020-09-24 23:57:37,982 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2020-09-24 23:57:38,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:57:38,888 INFO L93 Difference]: Finished difference Result 3109 states and 4016 transitions. [2020-09-24 23:57:38,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-09-24 23:57:38,889 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 142 [2020-09-24 23:57:38,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:57:38,913 INFO L225 Difference]: With dead ends: 3109 [2020-09-24 23:57:38,913 INFO L226 Difference]: Without dead ends: 2292 [2020-09-24 23:57:38,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1477 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=1500, Invalid=3756, Unknown=0, NotChecked=0, Total=5256 [2020-09-24 23:57:38,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2292 states. [2020-09-24 23:57:39,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2292 to 1833. [2020-09-24 23:57:39,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1833 states. [2020-09-24 23:57:39,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1833 states to 1833 states and 2243 transitions. [2020-09-24 23:57:39,024 INFO L78 Accepts]: Start accepts. Automaton has 1833 states and 2243 transitions. Word has length 142 [2020-09-24 23:57:39,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:57:39,025 INFO L479 AbstractCegarLoop]: Abstraction has 1833 states and 2243 transitions. [2020-09-24 23:57:39,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-24 23:57:39,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1833 states and 2243 transitions. [2020-09-24 23:57:39,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-24 23:57:39,032 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:57:39,033 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:57:39,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 23:57:39,034 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:57:39,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:57:39,034 INFO L82 PathProgramCache]: Analyzing trace with hash -820556042, now seen corresponding path program 1 times [2020-09-24 23:57:39,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:57:39,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853088510] [2020-09-24 23:57:39,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:57:39,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:57:39,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:57:39,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:57:39,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:57:39,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:57:39,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:57:39,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:57:39,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:57:41,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:57:41,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:57:41,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:57:42,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:57:42,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:57:42,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:57:43,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:57:43,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:57:44,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:57:44,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-24 23:57:44,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-24 23:57:44,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-24 23:57:44,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:57:44,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 23:57:44,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 23:57:44,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-24 23:57:44,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:57:44,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:57:44,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:57:44,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:57:44,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:57:44,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 23:57:44,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:57:44,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-24 23:57:44,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:57:44,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:57:44,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:57:44,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 23:57:44,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:57:44,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 23:57:44,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:57:44,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:57:44,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:57:44,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:57:44,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:57:44,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:57:44,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 23:57:44,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:57:44,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:57:44,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:57:44,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 23:57:44,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:57:44,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 23:57:44,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:57:44,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:57:44,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:57:44,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:57:44,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 23:57:44,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:57:44,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-24 23:57:44,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:57:44,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:57:44,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:57:44,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 23:57:44,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:57:44,646 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-24 23:57:44,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853088510] [2020-09-24 23:57:44,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:57:44,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 23:57:44,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533206833] [2020-09-24 23:57:44,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 23:57:44,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:57:44,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 23:57:44,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-24 23:57:44,649 INFO L87 Difference]: Start difference. First operand 1833 states and 2243 transitions. Second operand 13 states.