/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/Problem11_label18.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:48:39,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:48:39,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:48:40,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:48:40,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:48:40,052 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:48:40,054 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:48:40,058 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:48:40,061 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:48:40,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:48:40,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:48:40,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:48:40,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:48:40,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:48:40,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:48:40,075 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:48:40,077 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:48:40,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:48:40,080 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:48:40,089 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:48:40,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:48:40,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:48:40,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:48:40,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:48:40,113 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:48:40,114 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:48:40,114 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:48:40,118 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:48:40,119 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:48:40,120 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:48:40,120 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:48:40,123 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:48:40,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:48:40,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:48:40,126 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:48:40,127 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:48:40,128 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:48:40,128 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:48:40,128 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:48:40,129 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:48:40,130 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:48:40,131 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 06:48:40,161 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:48:40,162 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:48:40,163 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:48:40,164 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:48:40,164 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:48:40,164 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:48:40,164 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:48:40,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:48:40,165 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:48:40,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:48:40,165 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:48:40,165 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:48:40,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:48:40,166 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:48:40,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:48:40,166 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:48:40,166 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:48:40,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:48:40,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:48:40,167 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:48:40,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:48:40,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:48:40,168 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:48:40,168 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:48:40,168 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:48:40,168 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:48:40,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:48:40,169 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:48:40,169 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:48:40,169 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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:48:40,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:48:40,691 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:48:40,696 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:48:40,698 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:48:40,698 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:48:40,700 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label18.c [2020-09-25 06:48:40,796 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/867c805eb/2c13e02d8ab747e0a3b0e38042831582/FLAG198f73955 [2020-09-25 06:48:41,547 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:48:41,548 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label18.c [2020-09-25 06:48:41,566 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/867c805eb/2c13e02d8ab747e0a3b0e38042831582/FLAG198f73955 [2020-09-25 06:48:41,693 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/867c805eb/2c13e02d8ab747e0a3b0e38042831582 [2020-09-25 06:48:41,710 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:48:41,721 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:48:41,725 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:48:41,726 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:48:41,730 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:48:41,731 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:48:41" (1/1) ... [2020-09-25 06:48:41,736 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cbac012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:41, skipping insertion in model container [2020-09-25 06:48:41,737 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:48:41" (1/1) ... [2020-09-25 06:48:41,747 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:48:41,829 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:48:42,736 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:48:42,748 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:48:43,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:48:43,078 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:48:43,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:43 WrapperNode [2020-09-25 06:48:43,081 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:48:43,082 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:48:43,082 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:48:43,083 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:48:43,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:43" (1/1) ... [2020-09-25 06:48:43,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:43" (1/1) ... [2020-09-25 06:48:43,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:43" (1/1) ... [2020-09-25 06:48:43,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:43" (1/1) ... [2020-09-25 06:48:43,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:43" (1/1) ... [2020-09-25 06:48:43,254 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:43" (1/1) ... [2020-09-25 06:48:43,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:43" (1/1) ... [2020-09-25 06:48:43,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:48:43,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:48:43,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:48:43,284 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:48:43,285 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:43" (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 06:48:43,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:48:43,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:48:43,379 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:48:43,379 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:48:43,379 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:48:43,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:48:43,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:48:43,380 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:48:43,380 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:48:43,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:48:43,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:48:45,838 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:48:45,839 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:48:45,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:48:45 BoogieIcfgContainer [2020-09-25 06:48:45,857 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:48:45,859 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:48:45,859 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:48:45,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:48:45,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:48:41" (1/3) ... [2020-09-25 06:48:45,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b03a34f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:48:45, skipping insertion in model container [2020-09-25 06:48:45,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:43" (2/3) ... [2020-09-25 06:48:45,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b03a34f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:48:45, skipping insertion in model container [2020-09-25 06:48:45,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:48:45" (3/3) ... [2020-09-25 06:48:45,873 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label18.c [2020-09-25 06:48:45,885 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:48:45,902 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:48:45,926 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:48:45,970 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:48:45,971 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:48:45,971 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:48:45,971 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:48:45,972 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:48:45,972 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:48:45,972 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:48:45,972 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:48:46,020 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states. [2020-09-25 06:48:46,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 06:48:46,031 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:46,033 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] [2020-09-25 06:48:46,033 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:46,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:46,041 INFO L82 PathProgramCache]: Analyzing trace with hash -123889732, now seen corresponding path program 1 times [2020-09-25 06:48:46,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:46,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099427457] [2020-09-25 06:48:46,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:46,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:46,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:46,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:46,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:47,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:47,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 06:48:47,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:48:47,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1270 [2020-09-25 06:48:47,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:47,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:47,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:48:47,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 06:48:47,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 06:48:47,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:48:47,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:47,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:47,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:47,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:47,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 06:48:47,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:47,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 06:48:47,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:47,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:47,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:48:47,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:47,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:48:47,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:47,701 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 06:48:47,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099427457] [2020-09-25 06:48:47,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:48:47,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:48:47,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918950877] [2020-09-25 06:48:47,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:48:47,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:47,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:48:47,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:48:47,742 INFO L87 Difference]: Start difference. First operand 813 states. Second operand 4 states. [2020-09-25 06:48:51,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:51,501 INFO L93 Difference]: Finished difference Result 1921 states and 2518 transitions. [2020-09-25 06:48:51,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:48:51,504 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-09-25 06:48:51,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:51,538 INFO L225 Difference]: With dead ends: 1921 [2020-09-25 06:48:51,538 INFO L226 Difference]: Without dead ends: 1036 [2020-09-25 06:48:51,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:48:51,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2020-09-25 06:48:51,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 978. [2020-09-25 06:48:51,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 978 states. [2020-09-25 06:48:51,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1165 transitions. [2020-09-25 06:48:51,691 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1165 transitions. Word has length 55 [2020-09-25 06:48:51,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:51,692 INFO L479 AbstractCegarLoop]: Abstraction has 978 states and 1165 transitions. [2020-09-25 06:48:51,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:48:51,692 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1165 transitions. [2020-09-25 06:48:51,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 06:48:51,700 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:51,700 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:48:51,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:48:51,701 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:51,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:51,702 INFO L82 PathProgramCache]: Analyzing trace with hash 497365935, now seen corresponding path program 1 times [2020-09-25 06:48:51,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:51,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [648779108] [2020-09-25 06:48:51,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:51,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:51,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:51,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:53,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:54,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:54,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:55,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:56,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:56,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 06:48:56,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:48:56,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-09-25 06:48:56,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:56,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:56,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:48:56,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 06:48:56,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 06:48:56,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:56,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:56,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:56,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:56,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:56,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 06:48:56,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:56,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 06:48:56,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:56,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:56,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:48:56,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:56,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 06:48:56,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:56,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 06:48:56,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:56,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:57,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:57,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 06:48:57,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:57,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-09-25 06:48:57,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:57,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:57,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:57,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:48:57,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 06:48:57,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:57,313 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:48:57,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [648779108] [2020-09-25 06:48:57,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:48:57,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 06:48:57,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245256772] [2020-09-25 06:48:57,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:48:57,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:57,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:48:57,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:48:57,318 INFO L87 Difference]: Start difference. First operand 978 states and 1165 transitions. Second operand 8 states. [2020-09-25 06:49:02,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:49:02,739 INFO L93 Difference]: Finished difference Result 3086 states and 3853 transitions. [2020-09-25 06:49:02,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 06:49:02,743 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 137 [2020-09-25 06:49:02,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:49:02,757 INFO L225 Difference]: With dead ends: 3086 [2020-09-25 06:49:02,758 INFO L226 Difference]: Without dead ends: 2125 [2020-09-25 06:49:02,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-09-25 06:49:02,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2125 states. [2020-09-25 06:49:02,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2125 to 1779. [2020-09-25 06:49:02,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1779 states. [2020-09-25 06:49:02,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 2253 transitions. [2020-09-25 06:49:02,851 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 2253 transitions. Word has length 137 [2020-09-25 06:49:02,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:49:02,854 INFO L479 AbstractCegarLoop]: Abstraction has 1779 states and 2253 transitions. [2020-09-25 06:49:02,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:49:02,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 2253 transitions. [2020-09-25 06:49:02,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 06:49:02,873 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:49:02,874 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:49:02,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:49:02,874 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:49:02,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:49:02,875 INFO L82 PathProgramCache]: Analyzing trace with hash 466587141, now seen corresponding path program 1 times [2020-09-25 06:49:02,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:49:02,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419163243] [2020-09-25 06:49:02,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:49:02,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:02,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:03,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:03,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:03,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:05,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:07,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:07,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 06:49:07,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:49:07,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 06:49:07,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:07,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:07,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:49:07,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 06:49:07,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-25 06:49:07,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:08,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:49:08,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:08,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:08,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:08,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 06:49:08,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:08,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 06:49:08,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:08,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:08,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:49:08,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:08,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:49:08,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 06:49:08,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 06:49:08,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:08,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:08,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:08,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 06:49:08,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:08,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-09-25 06:49:08,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:08,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:08,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:49:08,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:49:08,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 06:49:08,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:08,700 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:49:08,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419163243] [2020-09-25 06:49:08,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:49:08,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:49:08,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880460081] [2020-09-25 06:49:08,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:49:08,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:49:08,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:49:08,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:49:08,707 INFO L87 Difference]: Start difference. First operand 1779 states and 2253 transitions. Second operand 7 states. [2020-09-25 06:49:13,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:49:13,416 INFO L93 Difference]: Finished difference Result 3934 states and 5201 transitions. [2020-09-25 06:49:13,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 06:49:13,418 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 163 [2020-09-25 06:49:13,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:49:13,430 INFO L225 Difference]: With dead ends: 3934 [2020-09-25 06:49:13,430 INFO L226 Difference]: Without dead ends: 2172 [2020-09-25 06:49:13,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:49:13,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2172 states. [2020-09-25 06:49:13,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2172 to 2152. [2020-09-25 06:49:13,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2152 states. [2020-09-25 06:49:13,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2152 states to 2152 states and 2672 transitions. [2020-09-25 06:49:13,493 INFO L78 Accepts]: Start accepts. Automaton has 2152 states and 2672 transitions. Word has length 163 [2020-09-25 06:49:13,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:49:13,494 INFO L479 AbstractCegarLoop]: Abstraction has 2152 states and 2672 transitions. [2020-09-25 06:49:13,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:49:13,494 INFO L276 IsEmpty]: Start isEmpty. Operand 2152 states and 2672 transitions. [2020-09-25 06:49:13,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 06:49:13,497 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:49:13,498 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:49:13,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:49:13,498 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:49:13,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:49:13,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1755075921, now seen corresponding path program 1 times [2020-09-25 06:49:13,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:49:13,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447031218] [2020-09-25 06:49:13,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:49:13,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:13,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:13,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:14,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:14,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:16,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:16,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:18,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:18,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:18,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:18,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 06:49:18,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:49:18,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 06:49:18,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:18,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:18,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:49:18,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 06:49:18,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 06:49:18,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:18,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:49:18,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:18,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:18,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:18,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 06:49:18,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:18,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 06:49:18,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:18,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:18,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:49:18,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:18,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 06:49:18,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:18,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 06:49:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:18,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:19,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:19,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-25 06:49:19,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:19,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-09-25 06:49:19,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:19,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:19,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:49:19,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:49:19,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 06:49:19,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:19,296 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:49:19,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447031218] [2020-09-25 06:49:19,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:49:19,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:49:19,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811572480] [2020-09-25 06:49:19,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:49:19,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:49:19,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:49:19,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:49:19,303 INFO L87 Difference]: Start difference. First operand 2152 states and 2672 transitions. Second operand 7 states. [2020-09-25 06:49:24,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:49:24,718 INFO L93 Difference]: Finished difference Result 4550 states and 5757 transitions. [2020-09-25 06:49:24,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:49:24,719 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2020-09-25 06:49:24,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:49:24,733 INFO L225 Difference]: With dead ends: 4550 [2020-09-25 06:49:24,733 INFO L226 Difference]: Without dead ends: 2809 [2020-09-25 06:49:24,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 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 06:49:24,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2809 states. [2020-09-25 06:49:24,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2809 to 2614. [2020-09-25 06:49:24,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2614 states. [2020-09-25 06:49:24,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2614 states to 2614 states and 3270 transitions. [2020-09-25 06:49:24,808 INFO L78 Accepts]: Start accepts. Automaton has 2614 states and 3270 transitions. Word has length 176 [2020-09-25 06:49:24,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:49:24,809 INFO L479 AbstractCegarLoop]: Abstraction has 2614 states and 3270 transitions. [2020-09-25 06:49:24,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:49:24,809 INFO L276 IsEmpty]: Start isEmpty. Operand 2614 states and 3270 transitions. [2020-09-25 06:49:24,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-09-25 06:49:24,815 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:49:24,815 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 06:49:24,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:49:24,815 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:49:24,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:49:24,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1151458182, now seen corresponding path program 1 times [2020-09-25 06:49:24,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:49:24,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796254276] [2020-09-25 06:49:24,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:49:24,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:24,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:25,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:25,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:27,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:27,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:27,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:28,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:28,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:29,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:29,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-09-25 06:49:29,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:49:29,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 06:49:29,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:29,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:29,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:49:29,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 143 [2020-09-25 06:49:29,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 06:49:29,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:30,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:49:30,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:30,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:30,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:30,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 06:49:30,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:30,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:49:30,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:30,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:30,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:49:30,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:30,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:49:30,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:30,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 06:49:30,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:30,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:30,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:30,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-25 06:49:30,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:30,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-25 06:49:30,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:30,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:30,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:49:30,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:30,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-25 06:49:30,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:30,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-25 06:49:30,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:30,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:30,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:30,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:49:30,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:30,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-25 06:49:30,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:30,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:30,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:49:30,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:49:30,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 06:49:30,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:30,640 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 116 proven. 33 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 06:49:30,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [796254276] [2020-09-25 06:49:30,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:49:30,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 06:49:30,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320520053] [2020-09-25 06:49:30,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:49:30,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:49:30,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:49:30,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:49:30,644 INFO L87 Difference]: Start difference. First operand 2614 states and 3270 transitions. Second operand 6 states.