/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --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_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:56:00,554 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:56:00,559 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:56:00,602 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:56:00,603 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:56:00,611 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:56:00,613 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:56:00,617 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:56:00,620 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:56:00,623 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:56:00,624 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:56:00,625 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:56:00,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:56:00,628 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:56:00,632 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:56:00,635 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:56:00,637 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:56:00,638 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:56:00,640 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:56:00,650 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:56:00,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:56:00,654 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:56:00,655 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:56:00,656 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:56:00,668 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:56:00,668 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:56:00,669 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:56:00,670 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:56:00,670 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:56:00,673 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:56:00,673 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:56:00,674 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:56:00,675 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:56:00,675 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:56:00,677 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:56:00,677 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:56:00,678 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:56:00,678 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:56:00,678 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:56:00,680 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:56:00,681 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:56:00,682 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 07:56:00,730 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:56:00,730 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:56:00,732 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:56:00,733 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:56:00,733 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:56:00,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:56:00,734 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:56:00,734 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:56:00,734 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:56:00,734 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:56:00,735 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:56:00,736 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:56:00,736 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:56:00,736 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:56:00,737 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:56:00,737 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:56:00,737 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:56:00,737 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:56:00,737 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:56:00,738 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:56:00,738 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:56:00,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:56:00,738 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:56:00,739 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:56:00,739 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:56:00,739 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:56:00,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:56:00,739 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:56:00,740 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:56:00,740 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:56:01,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:56:01,214 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:56:01,218 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:56:01,219 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:56:01,220 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:56:01,221 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label11.c [2020-09-25 07:56:01,283 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ccb354874/0118490d3d4e4dd19e177553acbdfe27/FLAG01c746fb3 [2020-09-25 07:56:01,931 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:56:01,932 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label11.c [2020-09-25 07:56:01,947 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ccb354874/0118490d3d4e4dd19e177553acbdfe27/FLAG01c746fb3 [2020-09-25 07:56:02,131 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ccb354874/0118490d3d4e4dd19e177553acbdfe27 [2020-09-25 07:56:02,147 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:56:02,153 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:56:02,155 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:56:02,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:56:02,159 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:56:02,160 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:56:02" (1/1) ... [2020-09-25 07:56:02,165 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb9461a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:02, skipping insertion in model container [2020-09-25 07:56:02,165 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:56:02" (1/1) ... [2020-09-25 07:56:02,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:56:02,227 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:56:02,750 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:56:02,764 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:56:03,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:56:03,030 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:56:03,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:03 WrapperNode [2020-09-25 07:56:03,031 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:56:03,033 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:56:03,033 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:56:03,033 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:56:03,051 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:03" (1/1) ... [2020-09-25 07:56:03,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:03" (1/1) ... [2020-09-25 07:56:03,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:03" (1/1) ... [2020-09-25 07:56:03,072 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:03" (1/1) ... [2020-09-25 07:56:03,111 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:03" (1/1) ... [2020-09-25 07:56:03,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:03" (1/1) ... [2020-09-25 07:56:03,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:03" (1/1) ... [2020-09-25 07:56:03,149 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:56:03,150 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:56:03,150 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:56:03,150 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:56:03,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:03" (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 07:56:03,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:56:03,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:56:03,238 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:56:03,238 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:56:03,238 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:56:03,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:56:03,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:56:03,238 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:56:03,239 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:56:03,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:56:03,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:56:04,821 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:56:04,822 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:56:04,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:56:04 BoogieIcfgContainer [2020-09-25 07:56:04,830 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:56:04,832 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:56:04,832 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:56:04,836 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:56:04,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:56:02" (1/3) ... [2020-09-25 07:56:04,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@564d2dd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:56:04, skipping insertion in model container [2020-09-25 07:56:04,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:03" (2/3) ... [2020-09-25 07:56:04,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@564d2dd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:56:04, skipping insertion in model container [2020-09-25 07:56:04,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:56:04" (3/3) ... [2020-09-25 07:56:04,841 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label11.c [2020-09-25 07:56:04,854 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:56:04,865 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:56:04,889 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:56:04,925 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:56:04,925 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:56:04,925 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:56:04,925 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:56:04,926 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:56:04,926 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:56:04,926 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:56:04,926 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:56:04,959 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 07:56:04,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 07:56:04,972 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:04,973 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] [2020-09-25 07:56:04,974 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:04,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:04,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1178337343, now seen corresponding path program 1 times [2020-09-25 07:56:04,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:04,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955057888] [2020-09-25 07:56:04,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:05,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:05,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:05,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:05,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:06,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:06,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 07:56:06,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:56:06,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1489 [2020-09-25 07:56:06,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:06,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:06,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:56:06,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:56:06,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 07:56:06,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 07:56:06,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:06,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:06,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:06,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:06,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:06,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:06,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 07:56:06,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:06,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:06,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:06,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:06,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:56:06,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:06,914 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 07:56:06,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955057888] [2020-09-25 07:56:06,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:56:06,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:56:06,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745460810] [2020-09-25 07:56:06,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:56:06,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:06,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:56:06,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:56:06,958 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 07:56:09,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:09,129 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 07:56:09,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:56:09,131 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-09-25 07:56:09,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:09,170 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 07:56:09,170 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 07:56:09,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 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 07:56:09,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 07:56:09,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 07:56:09,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 07:56:09,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 07:56:09,291 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 80 [2020-09-25 07:56:09,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:09,293 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 07:56:09,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:56:09,293 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 07:56:09,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 07:56:09,319 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:09,319 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, 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] [2020-09-25 07:56:09,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:56:09,320 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:09,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:09,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1494862159, now seen corresponding path program 1 times [2020-09-25 07:56:09,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:09,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1049918043] [2020-09-25 07:56:09,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:09,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:09,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:09,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:09,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:10,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:10,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:13,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:13,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 07:56:13,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:56:13,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4050 [2020-09-25 07:56:13,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:13,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:13,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:13,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 07:56:13,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 07:56:13,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:13,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:13,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:13,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:13,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:13,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:13,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:13,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 07:56:13,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:13,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:13,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:56:13,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:13,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:56:13,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:13,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:13,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:13,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:13,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 07:56:13,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:13,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 07:56:13,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:13,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:13,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:13,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:13,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 07:56:13,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:13,746 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:56:13,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1049918043] [2020-09-25 07:56:13,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:56:13,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:56:13,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791663853] [2020-09-25 07:56:13,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:56:13,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:13,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:56:13,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:56:13,751 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 5 states. [2020-09-25 07:56:15,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:15,514 INFO L93 Difference]: Finished difference Result 698 states and 888 transitions. [2020-09-25 07:56:15,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:56:15,516 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-09-25 07:56:15,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:15,523 INFO L225 Difference]: With dead ends: 698 [2020-09-25 07:56:15,523 INFO L226 Difference]: Without dead ends: 696 [2020-09-25 07:56:15,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:56:15,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-09-25 07:56:15,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 696. [2020-09-25 07:56:15,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-09-25 07:56:15,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 886 transitions. [2020-09-25 07:56:15,561 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 886 transitions. Word has length 159 [2020-09-25 07:56:15,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:15,562 INFO L479 AbstractCegarLoop]: Abstraction has 696 states and 886 transitions. [2020-09-25 07:56:15,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:56:15,562 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 886 transitions. [2020-09-25 07:56:15,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-25 07:56:15,568 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:15,569 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, 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] [2020-09-25 07:56:15,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:56:15,569 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:15,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:15,570 INFO L82 PathProgramCache]: Analyzing trace with hash -663007827, now seen corresponding path program 1 times [2020-09-25 07:56:15,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:15,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977842222] [2020-09-25 07:56:15,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:15,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:15,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:15,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:15,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:16,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:16,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:19,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:19,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:19,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:20,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:20,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-25 07:56:20,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:56:20,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 07:56:20,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:20,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:20,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:56:20,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 07:56:20,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 07:56:20,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:56:20,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:20,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:20,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:20,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:20,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:20,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:20,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 07:56:20,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:20,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:20,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:56:20,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:20,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:56:20,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:20,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:20,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:20,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:20,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:20,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:56:20,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:20,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-09-25 07:56:20,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:20,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:20,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:56:20,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:20,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 07:56:20,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:21,053 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:56:21,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977842222] [2020-09-25 07:56:21,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:56:21,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 07:56:21,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890220465] [2020-09-25 07:56:21,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:56:21,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:21,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:56:21,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:56:21,058 INFO L87 Difference]: Start difference. First operand 696 states and 886 transitions. Second operand 6 states. [2020-09-25 07:56:24,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:24,002 INFO L93 Difference]: Finished difference Result 1906 states and 2592 transitions. [2020-09-25 07:56:24,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 07:56:24,003 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 169 [2020-09-25 07:56:24,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:24,013 INFO L225 Difference]: With dead ends: 1906 [2020-09-25 07:56:24,013 INFO L226 Difference]: Without dead ends: 1376 [2020-09-25 07:56:24,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:56:24,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2020-09-25 07:56:24,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1168. [2020-09-25 07:56:24,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1168 states. [2020-09-25 07:56:24,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 1566 transitions. [2020-09-25 07:56:24,065 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 1566 transitions. Word has length 169 [2020-09-25 07:56:24,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:24,066 INFO L479 AbstractCegarLoop]: Abstraction has 1168 states and 1566 transitions. [2020-09-25 07:56:24,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:56:24,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 1566 transitions. [2020-09-25 07:56:24,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-09-25 07:56:24,075 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:24,076 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, 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] [2020-09-25 07:56:24,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:56:24,076 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:24,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:24,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1325292486, now seen corresponding path program 1 times [2020-09-25 07:56:24,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:24,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233639876] [2020-09-25 07:56:24,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:24,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:24,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:24,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:24,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:26,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:27,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:28,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:29,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:29,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-09-25 07:56:29,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:56:29,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 07:56:29,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:29,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:29,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:56:29,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:56:29,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 07:56:29,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:29,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:29,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:29,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:29,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:29,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:29,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:29,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:56:29,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:29,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:29,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:29,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:29,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:56:29,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:29,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:29,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:29,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:29,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:29,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 07:56:29,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:29,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-09-25 07:56:29,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:29,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:29,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:29,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:56:29,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 07:56:29,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:29,577 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:56:29,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [233639876] [2020-09-25 07:56:29,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:56:29,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:56:29,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050431096] [2020-09-25 07:56:29,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:56:29,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:29,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:56:29,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:56:29,580 INFO L87 Difference]: Start difference. First operand 1168 states and 1566 transitions. Second operand 7 states. [2020-09-25 07:56:31,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:31,726 INFO L93 Difference]: Finished difference Result 2822 states and 3938 transitions. [2020-09-25 07:56:31,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:56:31,727 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 216 [2020-09-25 07:56:31,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:31,741 INFO L225 Difference]: With dead ends: 2822 [2020-09-25 07:56:31,742 INFO L226 Difference]: Without dead ends: 1669 [2020-09-25 07:56:31,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:56:31,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1669 states. [2020-09-25 07:56:31,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1669 to 1485. [2020-09-25 07:56:31,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1485 states. [2020-09-25 07:56:31,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 1966 transitions. [2020-09-25 07:56:31,827 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 1966 transitions. Word has length 216 [2020-09-25 07:56:31,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:31,828 INFO L479 AbstractCegarLoop]: Abstraction has 1485 states and 1966 transitions. [2020-09-25 07:56:31,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:56:31,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 1966 transitions. [2020-09-25 07:56:31,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-09-25 07:56:31,834 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:31,835 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, 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] [2020-09-25 07:56:31,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:56:31,835 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:31,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:31,836 INFO L82 PathProgramCache]: Analyzing trace with hash -333534806, now seen corresponding path program 1 times [2020-09-25 07:56:31,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:31,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687457632] [2020-09-25 07:56:31,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:31,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:31,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:32,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:32,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:32,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:36,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:36,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-09-25 07:56:36,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:56:36,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 07:56:36,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:36,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:36,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 07:56:36,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 07:56:36,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-09-25 07:56:36,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:56:37,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:37,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:37,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:37,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:37,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:37,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:37,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 07:56:37,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:37,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:37,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:56:37,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:37,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 07:56:37,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:37,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:37,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:37,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:37,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:37,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:37,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 07:56:37,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:56:37,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 573 [2020-09-25 07:56:37,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:37,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:37,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:37,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:37,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 07:56:37,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:38,146 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:56:38,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687457632] [2020-09-25 07:56:38,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:56:38,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 07:56:38,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411987613] [2020-09-25 07:56:38,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 07:56:38,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:38,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 07:56:38,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:56:38,151 INFO L87 Difference]: Start difference. First operand 1485 states and 1966 transitions. Second operand 12 states. [2020-09-25 07:56:41,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:41,360 INFO L93 Difference]: Finished difference Result 3369 states and 4600 transitions. [2020-09-25 07:56:41,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 07:56:41,361 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 226 [2020-09-25 07:56:41,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:41,375 INFO L225 Difference]: With dead ends: 3369 [2020-09-25 07:56:41,376 INFO L226 Difference]: Without dead ends: 1947 [2020-09-25 07:56:41,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=130, Invalid=212, Unknown=0, NotChecked=0, Total=342 [2020-09-25 07:56:41,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1947 states. [2020-09-25 07:56:41,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1947 to 1785. [2020-09-25 07:56:41,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1785 states. [2020-09-25 07:56:41,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1785 states to 1785 states and 2302 transitions. [2020-09-25 07:56:41,467 INFO L78 Accepts]: Start accepts. Automaton has 1785 states and 2302 transitions. Word has length 226 [2020-09-25 07:56:41,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:41,468 INFO L479 AbstractCegarLoop]: Abstraction has 1785 states and 2302 transitions. [2020-09-25 07:56:41,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 07:56:41,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1785 states and 2302 transitions. [2020-09-25 07:56:41,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-09-25 07:56:41,484 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:41,485 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:56:41,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:56:41,485 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:41,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:41,486 INFO L82 PathProgramCache]: Analyzing trace with hash -2053765896, now seen corresponding path program 1 times [2020-09-25 07:56:41,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:41,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702934410] [2020-09-25 07:56:41,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:41,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:41,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:41,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:41,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:42,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:42,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:46,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:46,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-09-25 07:56:46,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:56:46,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 07:56:46,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:46,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:46,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:56:46,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 07:56:46,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 07:56:46,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:46,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:46,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:46,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:46,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:46,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:46,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:46,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:56:46,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:46,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:46,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:56:46,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:46,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:56:46,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:46,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:46,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:46,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:46,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:46,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 07:56:46,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:46,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-09-25 07:56:46,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:46,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:46,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:56:46,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:46,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 07:56:46,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:46,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-09-25 07:56:46,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:46,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:47,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:47,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 07:56:47,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:47,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-09-25 07:56:47,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:47,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:47,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:47,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:56:47,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 07:56:47,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:47,425 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 212 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:56:47,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702934410] [2020-09-25 07:56:47,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:56:47,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:56:47,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163146707] [2020-09-25 07:56:47,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:56:47,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:47,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:56:47,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:56:47,428 INFO L87 Difference]: Start difference. First operand 1785 states and 2302 transitions. Second operand 8 states.