/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_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:43:48,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:43:48,520 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:43:48,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:43:48,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:43:48,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:43:48,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:43:48,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:43:48,555 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:43:48,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:43:48,557 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:43:48,558 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:43:48,558 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:43:48,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:43:48,561 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:43:48,562 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:43:48,563 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:43:48,564 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:43:48,569 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:43:48,571 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:43:48,573 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:43:48,574 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:43:48,575 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:43:48,576 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:43:48,579 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:43:48,579 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:43:48,580 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:43:48,581 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:43:48,581 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:43:48,582 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:43:48,583 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:43:48,584 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:43:48,584 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:43:48,585 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:43:48,587 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:43:48,587 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:43:48,588 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:43:48,588 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:43:48,588 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:43:48,590 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:43:48,590 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:43:48,591 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 06:43:48,620 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:43:48,621 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:43:48,626 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:43:48,626 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:43:48,627 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:43:48,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:43:48,627 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:43:48,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:43:48,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:43:48,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:43:48,628 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:43:48,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:43:48,628 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:43:48,629 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:43:48,629 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:43:48,629 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:43:48,629 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:43:48,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:43:48,630 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:43:48,630 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:43:48,630 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:43:48,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:43:48,631 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:43:48,631 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:43:48,631 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:43:48,631 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:43:48,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:43:48,632 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:43:48,632 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:43:48,632 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 06:43:49,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:43:49,106 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:43:49,111 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:43:49,113 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:43:49,113 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:43:49,114 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label05.c [2020-09-25 06:43:49,202 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07cdda84e/ffa7222760f44181afa87d494c135ea0/FLAGe5e24f699 [2020-09-25 06:43:49,882 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:43:49,883 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label05.c [2020-09-25 06:43:49,900 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07cdda84e/ffa7222760f44181afa87d494c135ea0/FLAGe5e24f699 [2020-09-25 06:43:50,103 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07cdda84e/ffa7222760f44181afa87d494c135ea0 [2020-09-25 06:43:50,116 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:43:50,122 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:43:50,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:43:50,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:43:50,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:43:50,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:43:50" (1/1) ... [2020-09-25 06:43:50,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ee2931e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:50, skipping insertion in model container [2020-09-25 06:43:50,136 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:43:50" (1/1) ... [2020-09-25 06:43:50,146 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:43:50,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:43:50,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:43:50,669 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:43:50,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:43:50,925 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:43:50,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:50 WrapperNode [2020-09-25 06:43:50,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:43:50,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:43:50,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:43:50,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:43:50,946 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:50" (1/1) ... [2020-09-25 06:43:50,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:50" (1/1) ... [2020-09-25 06:43:50,967 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:50" (1/1) ... [2020-09-25 06:43:50,967 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:50" (1/1) ... [2020-09-25 06:43:51,006 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:50" (1/1) ... [2020-09-25 06:43:51,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:50" (1/1) ... [2020-09-25 06:43:51,042 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:50" (1/1) ... [2020-09-25 06:43:51,048 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:43:51,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:43:51,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:43:51,049 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:43:51,051 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:50" (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 06:43:51,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:43:51,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:43:51,158 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:43:51,159 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:43:51,159 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:43:51,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:43:51,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:43:51,160 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:43:51,160 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:43:51,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:43:51,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:43:52,669 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:43:52,669 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:43:52,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:43:52 BoogieIcfgContainer [2020-09-25 06:43:52,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:43:52,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:43:52,681 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:43:52,685 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:43:52,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:43:50" (1/3) ... [2020-09-25 06:43:52,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c86a072 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:43:52, skipping insertion in model container [2020-09-25 06:43:52,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:50" (2/3) ... [2020-09-25 06:43:52,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c86a072 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:43:52, skipping insertion in model container [2020-09-25 06:43:52,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:43:52" (3/3) ... [2020-09-25 06:43:52,690 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label05.c [2020-09-25 06:43:52,702 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:43:52,714 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:43:52,736 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:43:52,772 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:43:52,772 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:43:52,772 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:43:52,772 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:43:52,773 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:43:52,773 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:43:52,773 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:43:52,773 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:43:52,807 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 06:43:52,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 06:43:52,832 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:52,834 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:52,834 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:52,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:52,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1976766121, now seen corresponding path program 1 times [2020-09-25 06:43:52,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:52,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484759559] [2020-09-25 06:43:52,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:53,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:53,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:53,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:53,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:53,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:55,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:55,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:56,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:56,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:57,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:57,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:58,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:58,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-25 06:43:58,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 06:43:58,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 06:43:58,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:58,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:58,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:43:58,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 06:43:58,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-09-25 06:43:58,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:43:58,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:58,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:58,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:58,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:58,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:43:58,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:58,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 06:43:58,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:58,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:58,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:58,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:58,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 06:43:58,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:58,522 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 06:43:58,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484759559] [2020-09-25 06:43:58,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:43:58,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:43:58,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279406402] [2020-09-25 06:43:58,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:43:58,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:58,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:43:58,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:43:58,559 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 5 states. [2020-09-25 06:44:01,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:01,177 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-25 06:44:01,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:44:01,179 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-09-25 06:44:01,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:01,206 INFO L225 Difference]: With dead ends: 1396 [2020-09-25 06:44:01,206 INFO L226 Difference]: Without dead ends: 788 [2020-09-25 06:44:01,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:44:01,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-25 06:44:01,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-25 06:44:01,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-25 06:44:01,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-25 06:44:01,328 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 152 [2020-09-25 06:44:01,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:01,330 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-25 06:44:01,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:44:01,330 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-25 06:44:01,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-25 06:44:01,341 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:01,342 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:44:01,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:44:01,342 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:01,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:01,343 INFO L82 PathProgramCache]: Analyzing trace with hash 676695293, now seen corresponding path program 1 times [2020-09-25 06:44:01,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:01,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696065184] [2020-09-25 06:44:01,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:01,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:01,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:01,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:01,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:02,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:02,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:02,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:02,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:03,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:06,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:06,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 06:44:06,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:44:06,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 06:44:06,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:06,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:06,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:06,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 06:44:06,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 06:44:06,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:06,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:06,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:06,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:06,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:06,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:06,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:06,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 06:44:06,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:06,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:06,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:06,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:06,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:06,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 06:44:06,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:44:06,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:06,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:06,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:06,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 06:44:06,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:06,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 06:44:06,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:06,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:06,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:06,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:06,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 06:44:06,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:06,729 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 06:44:06,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696065184] [2020-09-25 06:44:06,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:44:06,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:44:06,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892618244] [2020-09-25 06:44:06,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:44:06,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:06,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:44:06,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:44:06,737 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 5 states. [2020-09-25 06:44:08,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:08,582 INFO L93 Difference]: Finished difference Result 1623 states and 2082 transitions. [2020-09-25 06:44:08,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:44:08,583 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-09-25 06:44:08,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:08,595 INFO L225 Difference]: With dead ends: 1623 [2020-09-25 06:44:08,596 INFO L226 Difference]: Without dead ends: 980 [2020-09-25 06:44:08,600 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 06:44:08,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2020-09-25 06:44:08,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 968. [2020-09-25 06:44:08,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 968 states. [2020-09-25 06:44:08,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1232 transitions. [2020-09-25 06:44:08,674 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1232 transitions. Word has length 170 [2020-09-25 06:44:08,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:08,677 INFO L479 AbstractCegarLoop]: Abstraction has 968 states and 1232 transitions. [2020-09-25 06:44:08,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:44:08,678 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1232 transitions. [2020-09-25 06:44:08,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-25 06:44:08,688 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:08,688 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:44:08,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:44:08,689 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:08,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:08,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1868326385, now seen corresponding path program 1 times [2020-09-25 06:44:08,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:08,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081245536] [2020-09-25 06:44:08,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:08,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:08,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:08,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:09,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:10,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:10,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:10,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:12,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:13,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:13,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:13,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:13,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:13,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-25 06:44:13,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 06:44:13,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 06:44:13,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:13,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:13,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:13,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-09-25 06:44:13,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 06:44:13,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:13,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:13,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:13,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:13,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:13,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:13,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:13,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:44:13,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:13,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:13,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:13,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:13,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:13,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:13,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:44:13,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:13,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:13,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:13,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:44:13,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:13,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 06:44:13,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:13,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:13,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:13,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:13,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 06:44:13,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:14,086 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:44:14,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081245536] [2020-09-25 06:44:14,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:44:14,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:44:14,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261391041] [2020-09-25 06:44:14,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:44:14,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:14,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:44:14,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:44:14,091 INFO L87 Difference]: Start difference. First operand 968 states and 1232 transitions. Second operand 5 states. [2020-09-25 06:44:16,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:16,134 INFO L93 Difference]: Finished difference Result 2423 states and 3188 transitions. [2020-09-25 06:44:16,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:44:16,135 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 190 [2020-09-25 06:44:16,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:16,144 INFO L225 Difference]: With dead ends: 2423 [2020-09-25 06:44:16,144 INFO L226 Difference]: Without dead ends: 1477 [2020-09-25 06:44:16,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 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 06:44:16,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1477 states. [2020-09-25 06:44:16,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1477 to 1426. [2020-09-25 06:44:16,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1426 states. [2020-09-25 06:44:16,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 1751 transitions. [2020-09-25 06:44:16,200 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 1751 transitions. Word has length 190 [2020-09-25 06:44:16,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:16,201 INFO L479 AbstractCegarLoop]: Abstraction has 1426 states and 1751 transitions. [2020-09-25 06:44:16,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:44:16,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 1751 transitions. [2020-09-25 06:44:16,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-09-25 06:44:16,209 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:16,210 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:44:16,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:44:16,210 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:16,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:16,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1346453927, now seen corresponding path program 1 times [2020-09-25 06:44:16,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:16,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268256766] [2020-09-25 06:44:16,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:16,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:16,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:16,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:17,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:17,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:19,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:20,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:21,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:21,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-09-25 06:44:21,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:44:21,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 06:44:21,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:21,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:21,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:21,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 06:44:21,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 06:44:21,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:21,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:21,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:21,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:21,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:21,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:21,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:44:21,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:21,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:21,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:21,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:21,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:21,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:21,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:44:21,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:21,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:21,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:21,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:44:21,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:21,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:44:21,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:21,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:21,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:21,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:21,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:21,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:21,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 06:44:21,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:21,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:21,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:21,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 06:44:21,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:21,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 06:44:21,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:21,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:21,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:21,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:21,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 06:44:21,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:21,617 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 06:44:21,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268256766] [2020-09-25 06:44:21,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:44:21,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:44:21,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803833842] [2020-09-25 06:44:21,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:44:21,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:21,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:44:21,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:44:21,627 INFO L87 Difference]: Start difference. First operand 1426 states and 1751 transitions. Second operand 5 states. [2020-09-25 06:44:23,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:23,427 INFO L93 Difference]: Finished difference Result 3448 states and 4434 transitions. [2020-09-25 06:44:23,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:44:23,428 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 209 [2020-09-25 06:44:23,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:23,441 INFO L225 Difference]: With dead ends: 3448 [2020-09-25 06:44:23,441 INFO L226 Difference]: Without dead ends: 2044 [2020-09-25 06:44:23,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 06:44:23,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2044 states. [2020-09-25 06:44:23,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2044 to 2031. [2020-09-25 06:44:23,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2031 states. [2020-09-25 06:44:23,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2031 states to 2031 states and 2571 transitions. [2020-09-25 06:44:23,512 INFO L78 Accepts]: Start accepts. Automaton has 2031 states and 2571 transitions. Word has length 209 [2020-09-25 06:44:23,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:23,513 INFO L479 AbstractCegarLoop]: Abstraction has 2031 states and 2571 transitions. [2020-09-25 06:44:23,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:44:23,513 INFO L276 IsEmpty]: Start isEmpty. Operand 2031 states and 2571 transitions. [2020-09-25 06:44:23,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-09-25 06:44:23,523 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:23,524 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:44:23,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:44:23,524 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:23,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:23,525 INFO L82 PathProgramCache]: Analyzing trace with hash -2119389814, now seen corresponding path program 1 times [2020-09-25 06:44:23,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:23,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169300685] [2020-09-25 06:44:23,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:23,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:23,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:23,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:23,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:26,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:27,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:28,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:28,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-09-25 06:44:28,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:44:28,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 06:44:28,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:28,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:28,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:44:28,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 06:44:28,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 06:44:28,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:44:28,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:28,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:28,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:28,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:28,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:28,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:28,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 06:44:28,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:28,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:28,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:28,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:28,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:44:28,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 06:44:28,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:44:28,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:28,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:28,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:28,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:44:28,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:28,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 06:44:28,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:28,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:28,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:28,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:44:28,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 06:44:28,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:28,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 06:44:28,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:28,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:28,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:28,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 06:44:28,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:28,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:44:28,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:28,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:28,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:28,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 06:44:28,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:28,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:28,945 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 43 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 06:44:28,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [169300685] [2020-09-25 06:44:28,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:44:28,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:44:28,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460388172] [2020-09-25 06:44:28,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:44:28,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:28,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:44:28,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:44:28,948 INFO L87 Difference]: Start difference. First operand 2031 states and 2571 transitions. Second operand 7 states. [2020-09-25 06:44:31,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:31,031 INFO L93 Difference]: Finished difference Result 5532 states and 7414 transitions. [2020-09-25 06:44:31,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:44:31,033 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 216 [2020-09-25 06:44:31,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:31,064 INFO L225 Difference]: With dead ends: 5532 [2020-09-25 06:44:31,064 INFO L226 Difference]: Without dead ends: 3523 [2020-09-25 06:44:31,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 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 06:44:31,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3523 states. [2020-09-25 06:44:31,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3523 to 3419. [2020-09-25 06:44:31,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3419 states. [2020-09-25 06:44:31,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3419 states to 3419 states and 4310 transitions. [2020-09-25 06:44:31,246 INFO L78 Accepts]: Start accepts. Automaton has 3419 states and 4310 transitions. Word has length 216 [2020-09-25 06:44:31,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:31,247 INFO L479 AbstractCegarLoop]: Abstraction has 3419 states and 4310 transitions. [2020-09-25 06:44:31,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:44:31,247 INFO L276 IsEmpty]: Start isEmpty. Operand 3419 states and 4310 transitions. [2020-09-25 06:44:31,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-09-25 06:44:31,268 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:31,269 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:44:31,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:44:31,270 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:31,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:31,270 INFO L82 PathProgramCache]: Analyzing trace with hash 101728031, now seen corresponding path program 1 times [2020-09-25 06:44:31,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:31,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308943942] [2020-09-25 06:44:31,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:31,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:31,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:31,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:31,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:32,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:33,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:33,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:33,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:34,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:34,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking...