/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=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:05:59,960 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:05:59,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:05:59,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:05:59,993 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:05:59,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:05:59,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:06:00,007 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:06:00,010 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:06:00,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:06:00,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:06:00,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:06:00,014 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:06:00,015 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:06:00,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:06:00,020 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:06:00,021 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:06:00,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:06:00,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:06:00,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:06:00,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:06:00,037 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:06:00,038 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:06:00,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:06:00,051 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:06:00,051 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:06:00,051 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:06:00,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:06:00,055 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:06:00,056 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:06:00,056 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:06:00,057 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:06:00,058 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:06:00,059 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:06:00,060 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:06:00,060 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:06:00,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:06:00,061 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:06:00,061 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:06:00,062 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:06:00,064 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:06:00,065 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 10:06:00,115 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:06:00,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:06:00,117 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:06:00,117 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:06:00,117 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:06:00,118 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:06:00,118 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:06:00,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:06:00,118 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:06:00,119 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:06:00,120 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:06:00,120 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:06:00,120 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:06:00,121 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:06:00,121 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:06:00,121 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:06:00,121 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:06:00,122 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:06:00,122 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:06:00,122 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:06:00,122 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:06:00,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:06:00,123 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:06:00,123 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:06:00,123 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:06:00,123 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:06:00,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:06:00,123 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:06:00,124 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:06:00,124 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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;log-additional-information=true; [2020-09-25 10:06:00,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:06:00,636 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:06:00,641 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:06:00,644 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:06:00,644 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:06:00,645 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label05.c [2020-09-25 10:06:00,720 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce23abe8a/7fa292f7f75f4972b72e08978435c0ee/FLAG89b0a8be0 [2020-09-25 10:06:01,400 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:06:01,401 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label05.c [2020-09-25 10:06:01,414 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce23abe8a/7fa292f7f75f4972b72e08978435c0ee/FLAG89b0a8be0 [2020-09-25 10:06:01,600 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce23abe8a/7fa292f7f75f4972b72e08978435c0ee [2020-09-25 10:06:01,615 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:06:01,621 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:06:01,624 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:06:01,625 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:06:01,629 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:06:01,630 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:06:01" (1/1) ... [2020-09-25 10:06:01,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d72532b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:01, skipping insertion in model container [2020-09-25 10:06:01,636 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:06:01" (1/1) ... [2020-09-25 10:06:01,646 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:06:01,717 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:06:02,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:06:02,230 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:06:02,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:06:02,457 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:06:02,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:02 WrapperNode [2020-09-25 10:06:02,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:06:02,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:06:02,458 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:06:02,459 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:06:02,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:02" (1/1) ... [2020-09-25 10:06:02,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:02" (1/1) ... [2020-09-25 10:06:02,492 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:02" (1/1) ... [2020-09-25 10:06:02,493 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:02" (1/1) ... [2020-09-25 10:06:02,540 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:02" (1/1) ... [2020-09-25 10:06:02,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:02" (1/1) ... [2020-09-25 10:06:02,556 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:02" (1/1) ... [2020-09-25 10:06:02,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:06:02,564 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:06:02,564 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:06:02,564 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:06:02,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:02" (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 10:06:02,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:06:02,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:06:02,638 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:06:02,638 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:06:02,639 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:06:02,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:06:02,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:06:02,639 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:06:02,639 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:06:02,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:06:02,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:06:03,902 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:06:03,902 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:06:03,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:06:03 BoogieIcfgContainer [2020-09-25 10:06:03,911 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:06:03,913 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:06:03,913 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:06:03,916 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:06:03,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:06:01" (1/3) ... [2020-09-25 10:06:03,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33478af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:06:03, skipping insertion in model container [2020-09-25 10:06:03,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:02" (2/3) ... [2020-09-25 10:06:03,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33478af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:06:03, skipping insertion in model container [2020-09-25 10:06:03,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:06:03" (3/3) ... [2020-09-25 10:06:03,921 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label05.c [2020-09-25 10:06:03,933 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:06:03,944 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:06:03,966 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:06:03,999 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:06:03,999 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:06:03,999 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:06:03,999 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:06:04,000 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:06:04,000 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:06:04,000 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:06:04,000 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:06:04,032 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 10:06:04,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-25 10:06:04,051 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:04,053 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:06:04,053 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:04,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:04,061 INFO L82 PathProgramCache]: Analyzing trace with hash 576098423, now seen corresponding path program 1 times [2020-09-25 10:06:04,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:04,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036488076] [2020-09-25 10:06:04,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:04,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:04,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:04,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:05,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:06,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:07,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:08,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:08,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:08,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:09,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:09,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 10:06:09,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:06:09,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 10:06:09,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:09,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:09,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:06:09,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 10:06:09,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-25 10:06:09,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 10:06:09,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:09,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:09,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:09,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:09,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:06:09,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:09,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 10:06:09,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:09,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:09,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:06:09,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:09,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 10:06:09,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:09,627 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 10:06:09,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036488076] [2020-09-25 10:06:09,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:06:09,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:06:09,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806031614] [2020-09-25 10:06:09,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:06:09,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:09,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:06:09,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:06:09,660 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 10:06:11,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:11,788 INFO L93 Difference]: Finished difference Result 1340 states and 1738 transitions. [2020-09-25 10:06:11,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:06:11,790 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2020-09-25 10:06:11,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:11,834 INFO L225 Difference]: With dead ends: 1340 [2020-09-25 10:06:11,834 INFO L226 Difference]: Without dead ends: 741 [2020-09-25 10:06:11,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:06:11,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-25 10:06:11,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-09-25 10:06:11,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 10:06:11,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 10:06:11,954 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 122 [2020-09-25 10:06:11,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:11,955 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 10:06:11,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:06:11,955 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 10:06:11,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 10:06:11,963 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:11,963 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:06:11,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:06:11,964 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:11,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:11,964 INFO L82 PathProgramCache]: Analyzing trace with hash -329610872, now seen corresponding path program 1 times [2020-09-25 10:06:11,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:11,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101605364] [2020-09-25 10:06:11,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:11,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:12,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:12,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:12,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:13,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:13,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-25 10:06:13,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:06:13,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1993 [2020-09-25 10:06:13,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:13,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:13,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:06:13,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 10:06:13,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 10:06:13,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:14,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:14,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:14,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:14,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:14,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:06:14,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:14,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 10:06:14,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:14,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:14,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:14,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:14,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:14,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:14,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:06:14,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:14,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:14,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:14,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:06:14,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:14,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 10:06:14,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:14,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:14,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:06:14,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:14,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:06:14,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:14,363 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:06:14,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101605364] [2020-09-25 10:06:14,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:06:14,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 10:06:14,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784722118] [2020-09-25 10:06:14,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:06:14,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:14,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:06:14,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:06:14,368 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 5 states. [2020-09-25 10:06:16,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:16,164 INFO L93 Difference]: Finished difference Result 1654 states and 2024 transitions. [2020-09-25 10:06:16,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 10:06:16,165 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-09-25 10:06:16,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:16,174 INFO L225 Difference]: With dead ends: 1654 [2020-09-25 10:06:16,174 INFO L226 Difference]: Without dead ends: 1014 [2020-09-25 10:06:16,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:06:16,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2020-09-25 10:06:16,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 950. [2020-09-25 10:06:16,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-09-25 10:06:16,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1142 transitions. [2020-09-25 10:06:16,236 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1142 transitions. Word has length 143 [2020-09-25 10:06:16,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:16,237 INFO L479 AbstractCegarLoop]: Abstraction has 950 states and 1142 transitions. [2020-09-25 10:06:16,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:06:16,237 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1142 transitions. [2020-09-25 10:06:16,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 10:06:16,243 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:16,244 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:06:16,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:06:16,244 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:16,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:16,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1723591899, now seen corresponding path program 1 times [2020-09-25 10:06:16,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:16,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497467804] [2020-09-25 10:06:16,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:16,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:16,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:16,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:17,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:17,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:17,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:21,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:21,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 10:06:21,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:06:21,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 10:06:21,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:21,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:21,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 10:06:21,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-09-25 10:06:21,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 10:06:21,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:22,031 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2020-09-25 10:06:22,267 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 50 [2020-09-25 10:06:22,538 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 52 [2020-09-25 10:06:22,796 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 49 [2020-09-25 10:06:23,040 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 45 [2020-09-25 10:06:23,256 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 41 [2020-09-25 10:06:23,469 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 35 [2020-09-25 10:06:23,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:23,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:23,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:23,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:23,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:06:23,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:23,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 10:06:23,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:23,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:23,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:23,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:23,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:23,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:23,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:06:23,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:23,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:23,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:23,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:06:23,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:23,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:06:23,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:23,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:23,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:23,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:23,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:23,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:23,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 10:06:23,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:23,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:23,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:23,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:06:23,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:23,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 10:06:23,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:23,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:23,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:06:23,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:23,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 10:06:23,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:24,132 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 10:06:24,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497467804] [2020-09-25 10:06:24,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:06:24,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 10:06:24,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478281964] [2020-09-25 10:06:24,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 10:06:24,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:24,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 10:06:24,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:06:24,142 INFO L87 Difference]: Start difference. First operand 950 states and 1142 transitions. Second operand 15 states. [2020-09-25 10:06:24,681 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-09-25 10:06:24,887 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-09-25 10:06:25,609 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 114 [2020-09-25 10:06:27,154 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 111 [2020-09-25 10:06:27,860 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 108 [2020-09-25 10:06:28,385 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 105 [2020-09-25 10:06:28,732 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 100 [2020-09-25 10:06:29,154 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-09-25 10:06:29,432 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-09-25 10:06:29,700 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-09-25 10:06:31,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:31,157 INFO L93 Difference]: Finished difference Result 2373 states and 3025 transitions. [2020-09-25 10:06:31,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 10:06:31,164 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 160 [2020-09-25 10:06:31,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:31,176 INFO L225 Difference]: With dead ends: 2373 [2020-09-25 10:06:31,176 INFO L226 Difference]: Without dead ends: 1447 [2020-09-25 10:06:31,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=264, Invalid=548, Unknown=0, NotChecked=0, Total=812 [2020-09-25 10:06:31,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1447 states. [2020-09-25 10:06:31,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1447 to 1396. [2020-09-25 10:06:31,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1396 states. [2020-09-25 10:06:31,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 1637 transitions. [2020-09-25 10:06:31,261 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 1637 transitions. Word has length 160 [2020-09-25 10:06:31,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:31,262 INFO L479 AbstractCegarLoop]: Abstraction has 1396 states and 1637 transitions. [2020-09-25 10:06:31,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 10:06:31,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 1637 transitions. [2020-09-25 10:06:31,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-25 10:06:31,271 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:31,273 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:06:31,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:06:31,273 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:31,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:31,274 INFO L82 PathProgramCache]: Analyzing trace with hash -2123224051, now seen corresponding path program 1 times [2020-09-25 10:06:31,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:31,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621133050] [2020-09-25 10:06:31,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:31,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:31,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:31,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:31,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:32,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:32,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:34,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:34,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:35,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:36,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:36,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 10:06:36,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:06:36,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 10:06:36,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:36,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:36,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 10:06:36,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:06:36,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 10:06:36,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:06:36,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:36,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:36,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:36,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:36,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:06:36,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:36,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 10:06:36,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:36,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:36,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:06:36,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:36,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:06:36,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:36,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:06:36,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:36,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:36,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:36,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:36,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:06:36,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:06:36,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 10:06:36,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:36,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:36,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:06:36,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:36,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 10:06:36,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:06:36,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 10:06:36,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:36,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:36,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:36,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:36,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:06:36,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:06:36,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-09-25 10:06:36,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:36,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:36,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:06:36,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:06:36,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:06:36,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:37,219 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:06:37,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621133050] [2020-09-25 10:06:37,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:06:37,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:06:37,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205166731] [2020-09-25 10:06:37,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:06:37,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:37,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:06:37,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:06:37,225 INFO L87 Difference]: Start difference. First operand 1396 states and 1637 transitions. Second operand 11 states. [2020-09-25 10:06:42,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:42,711 INFO L93 Difference]: Finished difference Result 3693 states and 4629 transitions. [2020-09-25 10:06:42,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 10:06:42,712 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 174 [2020-09-25 10:06:42,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:42,728 INFO L225 Difference]: With dead ends: 3693 [2020-09-25 10:06:42,728 INFO L226 Difference]: Without dead ends: 2321 [2020-09-25 10:06:42,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-09-25 10:06:42,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2321 states. [2020-09-25 10:06:42,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2321 to 2200. [2020-09-25 10:06:42,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2020-09-25 10:06:42,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 2597 transitions. [2020-09-25 10:06:42,808 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 2597 transitions. Word has length 174 [2020-09-25 10:06:42,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:42,808 INFO L479 AbstractCegarLoop]: Abstraction has 2200 states and 2597 transitions. [2020-09-25 10:06:42,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:06:42,809 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 2597 transitions. [2020-09-25 10:06:42,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-25 10:06:42,818 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:42,819 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:06:42,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:06:42,819 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:42,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:42,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1524876455, now seen corresponding path program 1 times [2020-09-25 10:06:42,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:42,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495370588] [2020-09-25 10:06:42,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:42,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:42,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:42,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:43,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:43,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:43,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:44,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:47,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:47,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:47,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:47,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-25 10:06:47,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:06:47,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-25 10:06:47,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:47,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:47,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 10:06:47,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:06:47,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-09-25 10:06:47,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 10:06:48,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:48,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:48,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:48,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:48,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:06:48,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:48,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 10:06:48,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:48,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:48,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:06:48,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:48,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:06:48,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:48,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:06:48,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:48,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:48,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:48,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:48,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:06:48,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:06:48,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 10:06:48,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:48,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:48,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:06:48,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:48,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 10:06:48,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:48,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 10:06:48,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:48,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:48,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:48,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:48,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 10:06:48,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:06:48,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-09-25 10:06:48,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:48,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:48,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:06:48,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:06:48,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 10:06:48,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:48,823 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 32 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:06:48,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495370588] [2020-09-25 10:06:48,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:06:48,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 10:06:48,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845794523] [2020-09-25 10:06:48,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 10:06:48,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:48,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 10:06:48,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-09-25 10:06:48,825 INFO L87 Difference]: Start difference. First operand 2200 states and 2597 transitions. Second operand 14 states.