/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:45:29,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:45:29,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:45:29,560 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:45:29,561 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:45:29,571 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:45:29,573 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:45:29,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:45:29,580 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:45:29,583 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:45:29,584 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:45:29,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:45:29,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:45:29,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:45:29,592 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:45:29,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:45:29,596 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:45:29,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:45:29,598 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:45:29,607 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:45:29,610 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:45:29,611 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:45:29,612 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:45:29,615 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:45:29,619 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:45:29,619 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:45:29,619 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:45:29,623 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:45:29,623 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:45:29,624 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:45:29,624 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:45:29,625 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:45:29,626 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:45:29,627 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:45:29,628 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:45:29,628 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:45:29,629 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:45:29,629 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:45:29,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:45:29,631 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:45:29,632 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:45:29,633 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 06:45:29,684 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:45:29,685 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:45:29,687 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:45:29,687 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:45:29,688 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:45:29,688 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:45:29,688 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:45:29,688 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:45:29,689 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:45:29,689 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:45:29,690 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:45:29,690 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:45:29,690 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:45:29,691 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:45:29,691 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:45:29,691 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:45:29,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:45:29,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:45:29,692 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:45:29,692 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:45:29,692 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:45:29,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:45:29,693 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:45:29,693 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:45:29,693 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:45:29,693 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:45:29,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:45:29,694 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:45:29,694 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:45:29,694 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:45:30,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:45:30,175 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:45:30,180 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:45:30,183 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:45:30,183 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:45:30,184 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label41.c [2020-09-25 06:45:30,266 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/28b636b4b/e38ac29617114dbb925896456db94d89/FLAG6eef651d4 [2020-09-25 06:45:30,924 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:45:30,925 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label41.c [2020-09-25 06:45:30,938 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/28b636b4b/e38ac29617114dbb925896456db94d89/FLAG6eef651d4 [2020-09-25 06:45:31,174 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/28b636b4b/e38ac29617114dbb925896456db94d89 [2020-09-25 06:45:31,186 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:45:31,191 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:45:31,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:45:31,193 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:45:31,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:45:31,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:45:31" (1/1) ... [2020-09-25 06:45:31,205 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ab41b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:31, skipping insertion in model container [2020-09-25 06:45:31,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:45:31" (1/1) ... [2020-09-25 06:45:31,215 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:45:31,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:45:31,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:45:31,884 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:45:32,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:45:32,043 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:45:32,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:32 WrapperNode [2020-09-25 06:45:32,044 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:45:32,045 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:45:32,045 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:45:32,045 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:45:32,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:32" (1/1) ... [2020-09-25 06:45:32,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:32" (1/1) ... [2020-09-25 06:45:32,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:32" (1/1) ... [2020-09-25 06:45:32,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:32" (1/1) ... [2020-09-25 06:45:32,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:32" (1/1) ... [2020-09-25 06:45:32,140 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:32" (1/1) ... [2020-09-25 06:45:32,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:32" (1/1) ... [2020-09-25 06:45:32,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:45:32,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:45:32,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:45:32,157 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:45:32,158 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:45:32,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:45:32,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:45:32,242 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:45:32,242 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:45:32,242 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:45:32,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:45:32,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:45:32,243 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:45:32,243 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:45:32,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:45:32,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:45:33,712 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:45:33,712 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:45:33,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:45:33 BoogieIcfgContainer [2020-09-25 06:45:33,726 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:45:33,727 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:45:33,727 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:45:33,732 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:45:33,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:45:31" (1/3) ... [2020-09-25 06:45:33,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@341adf7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:45:33, skipping insertion in model container [2020-09-25 06:45:33,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:32" (2/3) ... [2020-09-25 06:45:33,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@341adf7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:45:33, skipping insertion in model container [2020-09-25 06:45:33,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:45:33" (3/3) ... [2020-09-25 06:45:33,737 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label41.c [2020-09-25 06:45:33,749 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:45:33,763 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:45:33,786 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:45:33,821 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:45:33,822 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:45:33,822 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:45:33,822 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:45:33,822 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:45:33,822 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:45:33,822 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:45:33,823 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:45:33,856 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 06:45:33,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-09-25 06:45:33,876 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:33,878 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] [2020-09-25 06:45:33,878 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:33,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:33,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1858793511, now seen corresponding path program 1 times [2020-09-25 06:45:33,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:33,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601167599] [2020-09-25 06:45:33,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:34,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:34,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:34,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:35,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:37,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:37,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:38,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:38,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:39,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:39,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 06:45:39,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:45:39,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 06:45:39,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:39,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:39,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:45:39,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 06:45:39,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 06:45:39,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:45:39,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:45:39,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:39,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:39,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:39,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:45:39,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:39,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 06:45:39,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:39,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:39,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:45:39,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:39,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 06:45:39,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:45:39,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:45:39,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601167599] [2020-09-25 06:45:39,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:45:39,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:45:39,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857555442] [2020-09-25 06:45:39,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:45:39,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:45:39,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:45:39,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:45:39,542 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 06:45:41,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:45:41,948 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-25 06:45:41,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:45:41,954 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2020-09-25 06:45:41,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:45:41,983 INFO L225 Difference]: With dead ends: 1396 [2020-09-25 06:45:41,983 INFO L226 Difference]: Without dead ends: 788 [2020-09-25 06:45:41,992 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 06:45:42,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-25 06:45:42,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-25 06:45:42,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-25 06:45:42,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-25 06:45:42,103 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 116 [2020-09-25 06:45:42,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:45:42,104 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-25 06:45:42,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:45:42,105 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-25 06:45:42,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 06:45:42,112 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:42,112 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 06:45:42,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:45:42,113 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:42,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:42,113 INFO L82 PathProgramCache]: Analyzing trace with hash 525477933, now seen corresponding path program 1 times [2020-09-25 06:45:42,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:42,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085925235] [2020-09-25 06:45:42,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:42,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:42,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:42,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:43,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:43,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:43,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:44,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:44,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:45,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:46,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:47,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:47,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 06:45:47,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 06:45:47,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 06:45:47,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:47,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:47,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:45:47,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 06:45:47,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 06:45:47,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:47,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:45:47,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:47,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:47,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:47,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:45:47,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:47,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:45:47,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:47,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:47,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:45:47,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:47,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:45:47,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:47,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:45:47,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:47,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:47,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:47,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 06:45:47,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:47,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:45:47,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:47,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:47,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:45:47,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:47,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 06:45:47,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:47,385 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:45:47,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085925235] [2020-09-25 06:45:47,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:45:47,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:45:47,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957069537] [2020-09-25 06:45:47,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:45:47,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:45:47,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:45:47,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:45:47,389 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 5 states. [2020-09-25 06:45:49,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:45:49,228 INFO L93 Difference]: Finished difference Result 1662 states and 2128 transitions. [2020-09-25 06:45:49,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:45:49,229 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-09-25 06:45:49,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:45:49,238 INFO L225 Difference]: With dead ends: 1662 [2020-09-25 06:45:49,239 INFO L226 Difference]: Without dead ends: 1019 [2020-09-25 06:45:49,244 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 06:45:49,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2020-09-25 06:45:49,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 971. [2020-09-25 06:45:49,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 971 states. [2020-09-25 06:45:49,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1181 transitions. [2020-09-25 06:45:49,311 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1181 transitions. Word has length 134 [2020-09-25 06:45:49,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:45:49,312 INFO L479 AbstractCegarLoop]: Abstraction has 971 states and 1181 transitions. [2020-09-25 06:45:49,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:45:49,312 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1181 transitions. [2020-09-25 06:45:49,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 06:45:49,316 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:49,316 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] [2020-09-25 06:45:49,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:45:49,317 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:49,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:49,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1960543630, now seen corresponding path program 1 times [2020-09-25 06:45:49,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:49,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564856097] [2020-09-25 06:45:49,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:49,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:49,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:49,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:50,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:50,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:52,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:52,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:53,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:54,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:54,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 06:45:54,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:45:54,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 06:45:54,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:54,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:54,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:45:54,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 06:45:54,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 06:45:54,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:54,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:45:54,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:54,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:54,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:54,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:45:54,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:54,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:45:54,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:54,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:54,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:45:54,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:54,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:45:54,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:54,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:45:54,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:54,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:54,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:54,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 06:45:54,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:54,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 06:45:54,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:54,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:54,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:45:54,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:54,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 06:45:54,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:54,575 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 06:45:54,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564856097] [2020-09-25 06:45:54,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:45:54,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:45:54,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053377836] [2020-09-25 06:45:54,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:45:54,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:45:54,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:45:54,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:45:54,580 INFO L87 Difference]: Start difference. First operand 971 states and 1181 transitions. Second operand 5 states. [2020-09-25 06:45:56,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:45:56,542 INFO L93 Difference]: Finished difference Result 2094 states and 2618 transitions. [2020-09-25 06:45:56,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:45:56,543 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-09-25 06:45:56,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:45:56,554 INFO L225 Difference]: With dead ends: 2094 [2020-09-25 06:45:56,554 INFO L226 Difference]: Without dead ends: 1145 [2020-09-25 06:45:56,558 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 06:45:56,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2020-09-25 06:45:56,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 1123. [2020-09-25 06:45:56,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2020-09-25 06:45:56,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1356 transitions. [2020-09-25 06:45:56,607 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1356 transitions. Word has length 135 [2020-09-25 06:45:56,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:45:56,609 INFO L479 AbstractCegarLoop]: Abstraction has 1123 states and 1356 transitions. [2020-09-25 06:45:56,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:45:56,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1356 transitions. [2020-09-25 06:45:56,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 06:45:56,618 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:56,618 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:45:56,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:45:56,625 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:56,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:56,626 INFO L82 PathProgramCache]: Analyzing trace with hash 336019643, now seen corresponding path program 1 times [2020-09-25 06:45:56,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:56,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620296754] [2020-09-25 06:45:56,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:56,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:56,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:56,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:56,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:57,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:57,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:58,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:58,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:59,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:59,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:01,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:01,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-09-25 06:46:01,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 06:46:01,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4664 [2020-09-25 06:46:01,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:01,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:01,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:01,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 06:46:01,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 06:46:01,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:46:01,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:01,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:01,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:01,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:01,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:46:01,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:01,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 06:46:01,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:01,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:01,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:46:01,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:01,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:46:01,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:46:01,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:46:01,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:01,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:01,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:01,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:46:01,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:01,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 06:46:01,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:01,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:01,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:01,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:01,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:46:01,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:01,671 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:46:01,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620296754] [2020-09-25 06:46:01,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:46:01,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 06:46:01,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396773457] [2020-09-25 06:46:01,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:46:01,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:01,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:46:01,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:46:01,678 INFO L87 Difference]: Start difference. First operand 1123 states and 1356 transitions. Second operand 6 states. [2020-09-25 06:46:04,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:04,006 INFO L93 Difference]: Finished difference Result 2955 states and 3730 transitions. [2020-09-25 06:46:04,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:46:04,007 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2020-09-25 06:46:04,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:04,019 INFO L225 Difference]: With dead ends: 2955 [2020-09-25 06:46:04,019 INFO L226 Difference]: Without dead ends: 1854 [2020-09-25 06:46:04,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:46:04,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1854 states. [2020-09-25 06:46:04,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1854 to 1783. [2020-09-25 06:46:04,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1783 states. [2020-09-25 06:46:04,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1783 states to 1783 states and 2204 transitions. [2020-09-25 06:46:04,084 INFO L78 Accepts]: Start accepts. Automaton has 1783 states and 2204 transitions. Word has length 138 [2020-09-25 06:46:04,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:04,085 INFO L479 AbstractCegarLoop]: Abstraction has 1783 states and 2204 transitions. [2020-09-25 06:46:04,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:46:04,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1783 states and 2204 transitions. [2020-09-25 06:46:04,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 06:46:04,092 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:04,093 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2020-09-25 06:46:04,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:46:04,093 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:04,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:04,094 INFO L82 PathProgramCache]: Analyzing trace with hash -453985806, now seen corresponding path program 1 times [2020-09-25 06:46:04,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:04,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095979816] [2020-09-25 06:46:04,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:04,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:04,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:04,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:04,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:04,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:04,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:05,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:05,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 06:46:05,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:46:05,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1865 [2020-09-25 06:46:05,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:05,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:05,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:05,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 06:46:05,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 06:46:05,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:46:06,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:06,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:06,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:06,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:06,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:46:06,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:06,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:46:06,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:06,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:06,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:46:06,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:06,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:46:06,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:46:06,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:46:06,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:06,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:06,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:06,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 06:46:06,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:06,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 06:46:06,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:06,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:06,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:06,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:06,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 06:46:06,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:46:06,227 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:46:06,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095979816] [2020-09-25 06:46:06,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:46:06,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 06:46:06,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171918651] [2020-09-25 06:46:06,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:46:06,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:06,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:46:06,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:46:06,231 INFO L87 Difference]: Start difference. First operand 1783 states and 2204 transitions. Second operand 6 states. [2020-09-25 06:46:09,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:09,119 INFO L93 Difference]: Finished difference Result 4899 states and 6453 transitions. [2020-09-25 06:46:09,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:46:09,119 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2020-09-25 06:46:09,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:09,136 INFO L225 Difference]: With dead ends: 4899 [2020-09-25 06:46:09,137 INFO L226 Difference]: Without dead ends: 3138 [2020-09-25 06:46:09,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 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 06:46:09,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3138 states. [2020-09-25 06:46:09,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3138 to 2851. [2020-09-25 06:46:09,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2851 states. [2020-09-25 06:46:09,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2851 states to 2851 states and 3591 transitions. [2020-09-25 06:46:09,229 INFO L78 Accepts]: Start accepts. Automaton has 2851 states and 3591 transitions. Word has length 142 [2020-09-25 06:46:09,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:09,230 INFO L479 AbstractCegarLoop]: Abstraction has 2851 states and 3591 transitions. [2020-09-25 06:46:09,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:46:09,230 INFO L276 IsEmpty]: Start isEmpty. Operand 2851 states and 3591 transitions. [2020-09-25 06:46:09,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 06:46:09,242 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:09,242 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:46:09,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:46:09,242 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:09,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:09,243 INFO L82 PathProgramCache]: Analyzing trace with hash 771470164, now seen corresponding path program 1 times [2020-09-25 06:46:09,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:09,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474494316] [2020-09-25 06:46:09,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:09,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:09,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:09,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:09,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:11,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:12,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:14,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:14,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 06:46:14,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:46:14,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 06:46:14,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:14,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:14,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:46:14,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 06:46:14,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 06:46:14,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:46:14,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:14,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:14,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:14,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:14,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:46:14,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:14,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 06:46:14,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:14,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:14,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:14,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:14,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 06:46:14,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:14,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:46:14,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:14,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:14,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:14,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 06:46:14,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:14,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-25 06:46:14,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:14,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:14,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:14,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:46:14,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 06:46:14,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:14,596 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:46:14,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474494316] [2020-09-25 06:46:14,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:46:14,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:46:14,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767250354] [2020-09-25 06:46:14,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:46:14,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:14,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:46:14,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:46:14,600 INFO L87 Difference]: Start difference. First operand 2851 states and 3591 transitions. Second operand 7 states. [2020-09-25 06:46:17,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:17,016 INFO L93 Difference]: Finished difference Result 8419 states and 10987 transitions. [2020-09-25 06:46:17,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:46:17,017 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2020-09-25 06:46:17,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:17,052 INFO L225 Difference]: With dead ends: 8419 [2020-09-25 06:46:17,052 INFO L226 Difference]: Without dead ends: 5590 [2020-09-25 06:46:17,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:46:17,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5590 states. [2020-09-25 06:46:17,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5590 to 5211. [2020-09-25 06:46:17,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5211 states. [2020-09-25 06:46:17,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5211 states to 5211 states and 6597 transitions. [2020-09-25 06:46:17,237 INFO L78 Accepts]: Start accepts. Automaton has 5211 states and 6597 transitions. Word has length 164 [2020-09-25 06:46:17,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:17,238 INFO L479 AbstractCegarLoop]: Abstraction has 5211 states and 6597 transitions. [2020-09-25 06:46:17,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:46:17,238 INFO L276 IsEmpty]: Start isEmpty. Operand 5211 states and 6597 transitions. [2020-09-25 06:46:17,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 06:46:17,257 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:17,260 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:46:17,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:46:17,260 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:17,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:17,261 INFO L82 PathProgramCache]: Analyzing trace with hash 979375644, now seen corresponding path program 1 times [2020-09-25 06:46:17,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:17,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180586974] [2020-09-25 06:46:17,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:17,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:17,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:17,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:17,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:17,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:18,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking...