/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/Problem10_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:19:08,840 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:19:08,844 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:19:08,871 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:19:08,871 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:19:08,873 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:19:08,874 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:19:08,877 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:19:08,879 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:19:08,883 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:19:08,884 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:19:08,888 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:19:08,888 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:19:08,890 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:19:08,893 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:19:08,895 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:19:08,896 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:19:08,900 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:19:08,903 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:19:08,905 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:19:08,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:19:08,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:19:08,913 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:19:08,914 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:19:08,920 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:19:08,921 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:19:08,921 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:19:08,926 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:19:08,927 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:19:08,929 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:19:08,929 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:19:08,930 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:19:08,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:19:08,931 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:19:08,933 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:19:08,933 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:19:08,934 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:19:08,934 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:19:08,934 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:19:08,936 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:19:08,937 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:19:08,938 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 11:19:08,997 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:19:08,998 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:19:09,000 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:19:09,000 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:19:09,001 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:19:09,001 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:19:09,001 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:19:09,002 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:19:09,002 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:19:09,002 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:19:09,003 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:19:09,003 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:19:09,004 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:19:09,004 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:19:09,004 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:19:09,004 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:19:09,005 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:19:09,005 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:19:09,005 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:19:09,005 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:19:09,005 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:19:09,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:19:09,006 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:19:09,006 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:19:09,006 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:19:09,006 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:19:09,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:19:09,007 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:19:09,007 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:19:09,007 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:19:09,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:19:09,509 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:19:09,515 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:19:09,517 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:19:09,517 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:19:09,518 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label33.c [2020-09-25 11:19:09,616 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/adadb5f07/7b8a45a6319a476b8a9645957e039ce4/FLAG752be943c [2020-09-25 11:19:10,334 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:19:10,337 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label33.c [2020-09-25 11:19:10,359 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/adadb5f07/7b8a45a6319a476b8a9645957e039ce4/FLAG752be943c [2020-09-25 11:19:10,528 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/adadb5f07/7b8a45a6319a476b8a9645957e039ce4 [2020-09-25 11:19:10,547 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:19:10,555 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:19:10,557 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:19:10,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:19:10,563 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:19:10,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:19:10" (1/1) ... [2020-09-25 11:19:10,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad15a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:10, skipping insertion in model container [2020-09-25 11:19:10,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:19:10" (1/1) ... [2020-09-25 11:19:10,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:19:10,655 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:19:11,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:19:11,118 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:19:11,359 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:19:11,386 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:19:11,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:11 WrapperNode [2020-09-25 11:19:11,387 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:19:11,388 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:19:11,388 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:19:11,388 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:19:11,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:11" (1/1) ... [2020-09-25 11:19:11,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:11" (1/1) ... [2020-09-25 11:19:11,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:11" (1/1) ... [2020-09-25 11:19:11,425 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:11" (1/1) ... [2020-09-25 11:19:11,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:11" (1/1) ... [2020-09-25 11:19:11,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:11" (1/1) ... [2020-09-25 11:19:11,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:11" (1/1) ... [2020-09-25 11:19:11,499 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:19:11,500 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:19:11,500 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:19:11,500 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:19:11,502 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:11" (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 11:19:11,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:19:11,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:19:11,598 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:19:11,598 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:19:11,598 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:19:11,599 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:19:11,599 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:19:11,600 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:19:11,601 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:19:11,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:19:11,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:19:13,152 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:19:13,152 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:19:13,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:19:13 BoogieIcfgContainer [2020-09-25 11:19:13,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:19:13,166 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:19:13,166 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:19:13,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:19:13,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:19:10" (1/3) ... [2020-09-25 11:19:13,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9dacaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:19:13, skipping insertion in model container [2020-09-25 11:19:13,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:11" (2/3) ... [2020-09-25 11:19:13,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9dacaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:19:13, skipping insertion in model container [2020-09-25 11:19:13,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:19:13" (3/3) ... [2020-09-25 11:19:13,179 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label33.c [2020-09-25 11:19:13,192 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:19:13,204 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:19:13,228 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:19:13,265 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:19:13,266 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:19:13,266 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:19:13,266 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:19:13,266 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:19:13,266 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:19:13,267 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:19:13,267 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:19:13,301 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 11:19:13,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 11:19:13,313 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:13,315 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] [2020-09-25 11:19:13,316 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:13,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:13,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1274135065, now seen corresponding path program 1 times [2020-09-25 11:19:13,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:13,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939204010] [2020-09-25 11:19:13,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:13,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:13,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:13,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:13,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:14,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:14,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 11:19:14,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:19:14,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1384 [2020-09-25 11:19:14,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:14,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:14,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:19:14,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:19:14,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 11:19:14,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:19:15,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:15,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:15,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:15,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:15,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:15,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:15,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 11:19:15,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:15,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:15,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:15,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:15,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:19:15,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:15,091 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 11:19:15,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939204010] [2020-09-25 11:19:15,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:19:15,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:19:15,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959856163] [2020-09-25 11:19:15,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:19:15,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:15,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:19:15,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:19:15,125 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 11:19:17,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:17,284 INFO L93 Difference]: Finished difference Result 1089 states and 1514 transitions. [2020-09-25 11:19:17,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:19:17,286 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-09-25 11:19:17,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:17,311 INFO L225 Difference]: With dead ends: 1089 [2020-09-25 11:19:17,311 INFO L226 Difference]: Without dead ends: 575 [2020-09-25 11:19:17,324 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 11:19:17,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-09-25 11:19:17,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 545. [2020-09-25 11:19:17,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-09-25 11:19:17,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 642 transitions. [2020-09-25 11:19:17,434 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 642 transitions. Word has length 63 [2020-09-25 11:19:17,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:17,436 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 642 transitions. [2020-09-25 11:19:17,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:19:17,437 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 642 transitions. [2020-09-25 11:19:17,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 11:19:17,444 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:17,445 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 11:19:17,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:19:17,445 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:17,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:17,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1742825944, now seen corresponding path program 1 times [2020-09-25 11:19:17,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:17,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584275404] [2020-09-25 11:19:17,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:17,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:17,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:17,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:17,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:17,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:18,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:18,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:18,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:22,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:22,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 11:19:22,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:19:22,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 11:19:22,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:22,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:22,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:19:22,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:19:22,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-09-25 11:19:22,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:22,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:22,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:22,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:22,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:22,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:22,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:22,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 11:19:22,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:22,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:22,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:22,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:22,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:19:22,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:22,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:22,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:22,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:22,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:22,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:22,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:19:22,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:19:22,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-09-25 11:19:22,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:22,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:22,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:22,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:22,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 11:19:22,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:22,987 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 11:19:22,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584275404] [2020-09-25 11:19:22,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:22,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:19:22,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125555405] [2020-09-25 11:19:22,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:19:22,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:22,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:19:22,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:19:22,991 INFO L87 Difference]: Start difference. First operand 545 states and 642 transitions. Second operand 5 states. [2020-09-25 11:19:24,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:24,839 INFO L93 Difference]: Finished difference Result 861 states and 1069 transitions. [2020-09-25 11:19:24,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:19:24,844 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-09-25 11:19:24,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:24,852 INFO L225 Difference]: With dead ends: 861 [2020-09-25 11:19:24,852 INFO L226 Difference]: Without dead ends: 859 [2020-09-25 11:19:24,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:19:24,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-09-25 11:19:24,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 697. [2020-09-25 11:19:24,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-09-25 11:19:24,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 874 transitions. [2020-09-25 11:19:24,900 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 874 transitions. Word has length 142 [2020-09-25 11:19:24,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:24,901 INFO L479 AbstractCegarLoop]: Abstraction has 697 states and 874 transitions. [2020-09-25 11:19:24,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:19:24,902 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 874 transitions. [2020-09-25 11:19:24,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 11:19:24,905 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:24,905 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 11:19:24,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:19:24,906 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:24,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:24,906 INFO L82 PathProgramCache]: Analyzing trace with hash 821407407, now seen corresponding path program 1 times [2020-09-25 11:19:24,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:24,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820959108] [2020-09-25 11:19:24,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:24,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:24,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:25,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:25,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:25,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:25,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:26,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:26,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:26,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:26,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:29,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:29,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 11:19:29,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:19:29,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 11:19:29,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:29,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:29,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:19:29,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:19:29,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 11:19:29,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:30,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:30,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:30,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:30,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:30,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:30,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:30,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 11:19:30,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:30,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:30,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:19:30,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:30,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:19:30,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:30,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:30,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:30,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:30,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:30,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:30,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 11:19:30,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:19:30,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 358 [2020-09-25 11:19:30,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:30,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:30,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:19:30,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:30,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 11:19:30,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:30,641 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:19:30,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820959108] [2020-09-25 11:19:30,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:30,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:19:30,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902987719] [2020-09-25 11:19:30,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:19:30,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:30,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:19:30,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:19:30,644 INFO L87 Difference]: Start difference. First operand 697 states and 874 transitions. Second operand 10 states. [2020-09-25 11:19:33,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:33,386 INFO L93 Difference]: Finished difference Result 2200 states and 2941 transitions. [2020-09-25 11:19:33,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:19:33,387 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 146 [2020-09-25 11:19:33,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:33,397 INFO L225 Difference]: With dead ends: 2200 [2020-09-25 11:19:33,397 INFO L226 Difference]: Without dead ends: 1499 [2020-09-25 11:19:33,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-09-25 11:19:33,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1499 states. [2020-09-25 11:19:33,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1499 to 1156. [2020-09-25 11:19:33,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1156 states. [2020-09-25 11:19:33,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1401 transitions. [2020-09-25 11:19:33,449 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1401 transitions. Word has length 146 [2020-09-25 11:19:33,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:33,450 INFO L479 AbstractCegarLoop]: Abstraction has 1156 states and 1401 transitions. [2020-09-25 11:19:33,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:19:33,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1401 transitions. [2020-09-25 11:19:33,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 11:19:33,453 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:33,454 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:19:33,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:19:33,454 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:33,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:33,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1962223494, now seen corresponding path program 1 times [2020-09-25 11:19:33,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:33,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841434489] [2020-09-25 11:19:33,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:33,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:33,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:33,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:33,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:34,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:35,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:35,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:35,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:35,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:38,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:38,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 11:19:38,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:19:38,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 11:19:38,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:38,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:38,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:19:38,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:19:38,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-09-25 11:19:38,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:19:38,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:38,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:38,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:38,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:38,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:38,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:38,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 11:19:38,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:38,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:38,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:38,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:38,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:19:38,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:38,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:38,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:38,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:38,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:38,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:19:38,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:38,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-25 11:19:38,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:38,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:38,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:19:38,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:38,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 11:19:38,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:38,864 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 7 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:19:38,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841434489] [2020-09-25 11:19:38,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:38,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:19:38,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014394716] [2020-09-25 11:19:38,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:19:38,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:38,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:19:38,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:19:38,869 INFO L87 Difference]: Start difference. First operand 1156 states and 1401 transitions. Second operand 8 states. [2020-09-25 11:19:42,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:42,627 INFO L93 Difference]: Finished difference Result 3530 states and 4542 transitions. [2020-09-25 11:19:42,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:19:42,631 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 152 [2020-09-25 11:19:42,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:42,650 INFO L225 Difference]: With dead ends: 3530 [2020-09-25 11:19:42,650 INFO L226 Difference]: Without dead ends: 2389 [2020-09-25 11:19:42,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-09-25 11:19:42,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2020-09-25 11:19:42,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 2134. [2020-09-25 11:19:42,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2134 states. [2020-09-25 11:19:42,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2134 states to 2134 states and 2689 transitions. [2020-09-25 11:19:42,755 INFO L78 Accepts]: Start accepts. Automaton has 2134 states and 2689 transitions. Word has length 152 [2020-09-25 11:19:42,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:42,756 INFO L479 AbstractCegarLoop]: Abstraction has 2134 states and 2689 transitions. [2020-09-25 11:19:42,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:19:42,756 INFO L276 IsEmpty]: Start isEmpty. Operand 2134 states and 2689 transitions. [2020-09-25 11:19:42,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-25 11:19:42,762 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:42,762 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 11:19:42,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:19:42,763 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:42,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:42,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1916393390, now seen corresponding path program 1 times [2020-09-25 11:19:42,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:42,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1654567074] [2020-09-25 11:19:42,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:42,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:42,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:43,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:45,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:46,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:47,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:47,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-25 11:19:47,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:19:47,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 11:19:47,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:47,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:47,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:19:47,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:19:47,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 11:19:47,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:47,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:47,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:47,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:47,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:47,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:47,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:47,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 11:19:47,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:47,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:47,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:47,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:47,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:19:47,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 11:19:47,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:47,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:47,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:48,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:48,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 11:19:48,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:48,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-09-25 11:19:48,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:48,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:48,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:19:48,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:48,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 11:19:48,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:48,368 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:19:48,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1654567074] [2020-09-25 11:19:48,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:19:48,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 11:19:48,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760462001] [2020-09-25 11:19:48,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:19:48,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:48,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:19:48,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:19:48,371 INFO L87 Difference]: Start difference. First operand 2134 states and 2689 transitions. Second operand 7 states. [2020-09-25 11:19:50,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:50,587 INFO L93 Difference]: Finished difference Result 4981 states and 6626 transitions. [2020-09-25 11:19:50,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 11:19:50,588 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 195 [2020-09-25 11:19:50,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:50,608 INFO L225 Difference]: With dead ends: 4981 [2020-09-25 11:19:50,608 INFO L226 Difference]: Without dead ends: 3012 [2020-09-25 11:19:50,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:19:50,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3012 states. [2020-09-25 11:19:50,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3012 to 2918. [2020-09-25 11:19:50,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2918 states. [2020-09-25 11:19:50,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2918 states to 2918 states and 3656 transitions. [2020-09-25 11:19:50,706 INFO L78 Accepts]: Start accepts. Automaton has 2918 states and 3656 transitions. Word has length 195 [2020-09-25 11:19:50,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:50,707 INFO L479 AbstractCegarLoop]: Abstraction has 2918 states and 3656 transitions. [2020-09-25 11:19:50,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:19:50,707 INFO L276 IsEmpty]: Start isEmpty. Operand 2918 states and 3656 transitions. [2020-09-25 11:19:50,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-09-25 11:19:50,714 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:50,714 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:19:50,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:19:50,714 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:50,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:50,715 INFO L82 PathProgramCache]: Analyzing trace with hash -249277015, now seen corresponding path program 1 times [2020-09-25 11:19:50,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:50,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163542100] [2020-09-25 11:19:50,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:50,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:50,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:50,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:51,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:51,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:51,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:55,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:55,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-09-25 11:19:55,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:19:55,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 11:19:55,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:55,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:55,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:19:55,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:19:55,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 11:19:55,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:55,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:55,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:55,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:55,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:55,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:55,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:55,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:19:55,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:55,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:55,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:55,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:55,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:19:55,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:19:55,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:55,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:55,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:55,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:55,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:19:55,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:55,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 11:19:55,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:55,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:55,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:19:55,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:55,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 11:19:55,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:56,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 11:19:56,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:56,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:56,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:56,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:19:56,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:56,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-25 11:19:56,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:56,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:56,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:19:56,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:56,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 11:19:56,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:19:56,273 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 104 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 11:19:56,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1163542100] [2020-09-25 11:19:56,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:56,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:19:56,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332354961] [2020-09-25 11:19:56,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:19:56,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:56,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:19:56,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:19:56,276 INFO L87 Difference]: Start difference. First operand 2918 states and 3656 transitions. Second operand 9 states.