/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:57:21,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:57:21,499 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:57:21,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:57:21,533 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:57:21,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:57:21,536 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:57:21,538 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:57:21,540 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:57:21,540 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:57:21,542 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:57:21,543 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:57:21,543 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:57:21,545 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:57:21,546 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:57:21,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:57:21,548 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:57:21,550 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:57:21,552 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:57:21,554 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:57:21,557 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:57:21,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:57:21,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:57:21,563 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:57:21,567 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:57:21,567 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:57:21,568 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:57:21,569 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:57:21,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:57:21,574 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:57:21,574 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:57:21,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:57:21,578 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:57:21,580 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:57:21,582 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:57:21,582 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:57:21,583 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:57:21,583 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:57:21,583 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:57:21,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:57:21,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:57:21,594 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 07:57:21,644 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:57:21,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:57:21,647 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:57:21,647 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:57:21,647 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:57:21,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:57:21,648 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:57:21,648 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:57:21,648 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:57:21,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:57:21,650 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:57:21,650 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:57:21,650 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:57:21,650 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:57:21,651 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:57:21,651 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:57:21,651 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:57:21,651 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:57:21,651 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:57:21,652 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:57:21,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:57:21,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:57:21,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:57:21,652 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:57:21,653 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:57:21,653 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:57:21,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:57:21,653 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:57:21,653 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:57:21,654 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:57:22,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:57:22,125 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:57:22,130 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:57:22,132 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:57:22,133 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:57:22,134 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label51.c [2020-09-25 07:57:22,232 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ec9341d1/f8c74fb981f4492490504c26f5750ad7/FLAG0510d79ee [2020-09-25 07:57:22,902 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:57:22,903 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label51.c [2020-09-25 07:57:22,918 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ec9341d1/f8c74fb981f4492490504c26f5750ad7/FLAG0510d79ee [2020-09-25 07:57:23,139 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ec9341d1/f8c74fb981f4492490504c26f5750ad7 [2020-09-25 07:57:23,153 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:57:23,159 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:57:23,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:57:23,161 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:57:23,165 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:57:23,167 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:57:23" (1/1) ... [2020-09-25 07:57:23,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66214dfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:23, skipping insertion in model container [2020-09-25 07:57:23,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:57:23" (1/1) ... [2020-09-25 07:57:23,181 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:57:23,239 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:57:23,780 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:57:23,786 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:57:24,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:57:24,064 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:57:24,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:24 WrapperNode [2020-09-25 07:57:24,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:57:24,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:57:24,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:57:24,066 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:57:24,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:24" (1/1) ... [2020-09-25 07:57:24,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:24" (1/1) ... [2020-09-25 07:57:24,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:24" (1/1) ... [2020-09-25 07:57:24,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:24" (1/1) ... [2020-09-25 07:57:24,144 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:24" (1/1) ... [2020-09-25 07:57:24,163 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:24" (1/1) ... [2020-09-25 07:57:24,168 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:24" (1/1) ... [2020-09-25 07:57:24,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:57:24,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:57:24,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:57:24,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:57:24,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:24" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:57:24,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:57:24,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:57:24,274 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:57:24,275 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:57:24,275 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:57:24,275 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:57:24,275 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:57:24,275 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:57:24,275 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:57:24,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:57:24,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:57:25,798 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:57:25,798 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:57:25,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:57:25 BoogieIcfgContainer [2020-09-25 07:57:25,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:57:25,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:57:25,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:57:25,814 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:57:25,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:57:23" (1/3) ... [2020-09-25 07:57:25,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@386a18c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:57:25, skipping insertion in model container [2020-09-25 07:57:25,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:24" (2/3) ... [2020-09-25 07:57:25,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@386a18c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:57:25, skipping insertion in model container [2020-09-25 07:57:25,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:57:25" (3/3) ... [2020-09-25 07:57:25,820 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label51.c [2020-09-25 07:57:25,833 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:57:25,846 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:57:25,873 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:57:25,913 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:57:25,913 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:57:25,913 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:57:25,913 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:57:25,913 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:57:25,914 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:57:25,914 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:57:25,914 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:57:25,949 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 07:57:25,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 07:57:25,961 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:25,963 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] [2020-09-25 07:57:25,964 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:25,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:25,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1905842433, now seen corresponding path program 1 times [2020-09-25 07:57:25,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:25,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047597280] [2020-09-25 07:57:25,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:26,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:26,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:26,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:26,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:27,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:27,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 07:57:27,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:57:27,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1054 [2020-09-25 07:57:27,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:27,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:27,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:57:27,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:57:27,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 07:57:27,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:57:27,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:27,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:27,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:27,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:27,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:27,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:27,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 07:57:27,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:27,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:27,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:27,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:27,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:57:27,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:27,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:57:27,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047597280] [2020-09-25 07:57:27,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:57:27,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 07:57:27,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304580615] [2020-09-25 07:57:27,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:57:27,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:27,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:57:27,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:57:27,529 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 07:57:30,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:30,896 INFO L93 Difference]: Finished difference Result 1358 states and 1918 transitions. [2020-09-25 07:57:30,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 07:57:30,901 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-09-25 07:57:30,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:30,929 INFO L225 Difference]: With dead ends: 1358 [2020-09-25 07:57:30,929 INFO L226 Difference]: Without dead ends: 812 [2020-09-25 07:57:30,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:57:30,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-09-25 07:57:31,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 738. [2020-09-25 07:57:31,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2020-09-25 07:57:31,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 928 transitions. [2020-09-25 07:57:31,056 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 928 transitions. Word has length 69 [2020-09-25 07:57:31,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:31,057 INFO L479 AbstractCegarLoop]: Abstraction has 738 states and 928 transitions. [2020-09-25 07:57:31,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:57:31,057 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 928 transitions. [2020-09-25 07:57:31,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-25 07:57:31,066 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:31,067 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:57:31,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:57:31,067 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:31,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:31,068 INFO L82 PathProgramCache]: Analyzing trace with hash -966101360, now seen corresponding path program 1 times [2020-09-25 07:57:31,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:31,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561723338] [2020-09-25 07:57:31,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:31,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:31,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:31,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:31,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:31,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:31,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:33,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:33,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 07:57:33,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:57:33,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2700 [2020-09-25 07:57:33,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:33,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:33,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:33,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 07:57:33,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 07:57:33,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:33,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:33,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:33,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:33,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:33,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:33,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:33,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:57:33,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:33,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:33,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:57:33,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:33,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:57:33,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:33,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:33,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:33,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:34,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:34,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 07:57:34,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:34,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 07:57:34,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:34,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:34,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:34,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:34,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 07:57:34,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:34,111 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:57:34,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561723338] [2020-09-25 07:57:34,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:57:34,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:57:34,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821915573] [2020-09-25 07:57:34,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:57:34,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:34,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:57:34,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:57:34,116 INFO L87 Difference]: Start difference. First operand 738 states and 928 transitions. Second operand 5 states. [2020-09-25 07:57:35,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:35,929 INFO L93 Difference]: Finished difference Result 1762 states and 2316 transitions. [2020-09-25 07:57:35,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:57:35,930 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-09-25 07:57:35,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:35,937 INFO L225 Difference]: With dead ends: 1762 [2020-09-25 07:57:35,937 INFO L226 Difference]: Without dead ends: 1039 [2020-09-25 07:57:35,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:57:35,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2020-09-25 07:57:35,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1039. [2020-09-25 07:57:35,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2020-09-25 07:57:35,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1333 transitions. [2020-09-25 07:57:35,985 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1333 transitions. Word has length 148 [2020-09-25 07:57:35,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:35,986 INFO L479 AbstractCegarLoop]: Abstraction has 1039 states and 1333 transitions. [2020-09-25 07:57:35,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:57:35,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1333 transitions. [2020-09-25 07:57:36,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 07:57:36,002 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:36,003 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:57:36,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:57:36,003 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:36,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:36,004 INFO L82 PathProgramCache]: Analyzing trace with hash -379911190, now seen corresponding path program 1 times [2020-09-25 07:57:36,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:36,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287190685] [2020-09-25 07:57:36,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:36,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:36,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:36,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:36,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:37,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:37,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 07:57:37,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:57:37,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1468 [2020-09-25 07:57:37,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:37,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:37,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:57:37,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 07:57:37,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 07:57:37,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:37,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:37,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:37,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:37,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:37,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:37,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:37,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:57:37,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:37,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:37,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:37,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:37,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:57:37,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:37,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:37,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:37,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:37,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:37,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 07:57:37,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:37,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-25 07:57:37,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:37,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:37,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:37,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:57:37,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 07:57:37,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:37,961 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:57:37,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287190685] [2020-09-25 07:57:37,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:57:37,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:57:37,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806497483] [2020-09-25 07:57:37,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:57:37,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:37,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:57:37,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:57:37,964 INFO L87 Difference]: Start difference. First operand 1039 states and 1333 transitions. Second operand 7 states. [2020-09-25 07:57:40,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:40,114 INFO L93 Difference]: Finished difference Result 2568 states and 3464 transitions. [2020-09-25 07:57:40,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:57:40,115 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 160 [2020-09-25 07:57:40,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:40,125 INFO L225 Difference]: With dead ends: 2568 [2020-09-25 07:57:40,126 INFO L226 Difference]: Without dead ends: 1694 [2020-09-25 07:57:40,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:57:40,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1694 states. [2020-09-25 07:57:40,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 1660. [2020-09-25 07:57:40,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1660 states. [2020-09-25 07:57:40,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1660 states to 1660 states and 2039 transitions. [2020-09-25 07:57:40,186 INFO L78 Accepts]: Start accepts. Automaton has 1660 states and 2039 transitions. Word has length 160 [2020-09-25 07:57:40,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:40,187 INFO L479 AbstractCegarLoop]: Abstraction has 1660 states and 2039 transitions. [2020-09-25 07:57:40,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:57:40,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1660 states and 2039 transitions. [2020-09-25 07:57:40,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-09-25 07:57:40,193 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:40,193 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:57:40,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:57:40,193 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:40,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:40,194 INFO L82 PathProgramCache]: Analyzing trace with hash -2020435647, now seen corresponding path program 1 times [2020-09-25 07:57:40,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:40,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [869532543] [2020-09-25 07:57:40,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:40,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:40,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:40,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:40,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:41,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:43,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:44,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:44,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:45,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:45,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-09-25 07:57:45,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:57:45,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 07:57:45,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:45,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:45,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:57:45,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 07:57:45,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 07:57:45,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:45,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:45,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:45,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:45,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:45,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:45,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:45,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:57:45,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:45,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:45,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:57:45,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:45,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:57:45,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:45,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:45,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:45,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:45,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:45,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 07:57:45,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:45,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-25 07:57:45,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:45,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:45,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:57:45,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:45,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 07:57:45,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:45,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 07:57:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:45,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:45,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:45,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:57:45,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:45,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-25 07:57:45,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:45,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:45,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:45,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:57:45,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 07:57:45,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:57:45,991 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:57:45,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [869532543] [2020-09-25 07:57:45,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:57:45,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:57:45,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54098171] [2020-09-25 07:57:45,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:57:45,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:45,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:57:45,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:57:45,998 INFO L87 Difference]: Start difference. First operand 1660 states and 2039 transitions. Second operand 8 states. [2020-09-25 07:57:49,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:49,706 INFO L93 Difference]: Finished difference Result 4481 states and 5921 transitions. [2020-09-25 07:57:49,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 07:57:49,707 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 237 [2020-09-25 07:57:49,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:49,725 INFO L225 Difference]: With dead ends: 4481 [2020-09-25 07:57:49,725 INFO L226 Difference]: Without dead ends: 2986 [2020-09-25 07:57:49,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-09-25 07:57:49,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2986 states. [2020-09-25 07:57:49,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2986 to 2937. [2020-09-25 07:57:49,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2937 states. [2020-09-25 07:57:49,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2937 states to 2937 states and 3837 transitions. [2020-09-25 07:57:49,828 INFO L78 Accepts]: Start accepts. Automaton has 2937 states and 3837 transitions. Word has length 237 [2020-09-25 07:57:49,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:49,829 INFO L479 AbstractCegarLoop]: Abstraction has 2937 states and 3837 transitions. [2020-09-25 07:57:49,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:57:49,829 INFO L276 IsEmpty]: Start isEmpty. Operand 2937 states and 3837 transitions. [2020-09-25 07:57:49,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-09-25 07:57:49,835 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:49,835 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:57:49,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:57:49,836 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:49,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:49,836 INFO L82 PathProgramCache]: Analyzing trace with hash 878642836, now seen corresponding path program 1 times [2020-09-25 07:57:49,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:49,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [930527409] [2020-09-25 07:57:49,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:49,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:49,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:50,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:50,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:50,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:51,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:51,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:52,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:53,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:53,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:54,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:54,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:54,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:54,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-09-25 07:57:54,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 07:57:54,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-25 07:57:54,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:54,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:54,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:57:54,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 07:57:54,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 07:57:54,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:55,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:55,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:55,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:55,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:55,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:55,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:55,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 07:57:55,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:55,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:55,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:57:55,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:55,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:57:55,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:55,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:55,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:55,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:55,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:55,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:57:55,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:55,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 07:57:55,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:55,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:55,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:55,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:55,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 07:57:55,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:55,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 07:57:55,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:55,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:55,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:55,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:55,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 07:57:55,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:57:55,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 406 [2020-09-25 07:57:55,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:55,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:55,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:57:55,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:55,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 07:57:55,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:55,936 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 114 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-09-25 07:57:55,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [930527409] [2020-09-25 07:57:55,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:57:55,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:57:55,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694194660] [2020-09-25 07:57:55,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:57:55,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:55,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:57:55,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:57:55,939 INFO L87 Difference]: Start difference. First operand 2937 states and 3837 transitions. Second operand 9 states. [2020-09-25 07:58:00,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:58:00,510 INFO L93 Difference]: Finished difference Result 6376 states and 8546 transitions. [2020-09-25 07:58:00,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 07:58:00,515 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 241 [2020-09-25 07:58:00,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:58:00,534 INFO L225 Difference]: With dead ends: 6376 [2020-09-25 07:58:00,535 INFO L226 Difference]: Without dead ends: 3585 [2020-09-25 07:58:00,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-09-25 07:58:00,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3585 states. [2020-09-25 07:58:00,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3585 to 3394. [2020-09-25 07:58:00,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3394 states. [2020-09-25 07:58:00,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3394 states to 3394 states and 4391 transitions. [2020-09-25 07:58:00,635 INFO L78 Accepts]: Start accepts. Automaton has 3394 states and 4391 transitions. Word has length 241 [2020-09-25 07:58:00,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:58:00,636 INFO L479 AbstractCegarLoop]: Abstraction has 3394 states and 4391 transitions. [2020-09-25 07:58:00,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 07:58:00,636 INFO L276 IsEmpty]: Start isEmpty. Operand 3394 states and 4391 transitions. [2020-09-25 07:58:00,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-09-25 07:58:00,644 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:58:00,644 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 07:58:00,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:58:00,644 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:58:00,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:58:00,645 INFO L82 PathProgramCache]: Analyzing trace with hash -83885025, now seen corresponding path program 1 times [2020-09-25 07:58:00,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:58:00,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106793034] [2020-09-25 07:58:00,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:58:00,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:00,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:00,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:01,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:01,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:02,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:02,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:05,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:05,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-09-25 07:58:05,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:58:05,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-25 07:58:05,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:05,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:05,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:58:05,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 07:58:05,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 07:58:05,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:05,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:58:05,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:05,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:05,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:05,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:58:05,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:05,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:58:05,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:05,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:05,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:58:05,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:05,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:58:05,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:05,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:58:05,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:05,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:05,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:05,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:58:05,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:05,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-25 07:58:05,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:05,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:05,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:58:05,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:05,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 07:58:05,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:05,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 07:58:05,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:05,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:06,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:06,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 07:58:06,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:06,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-25 07:58:06,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:06,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:06,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:58:06,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:58:06,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 07:58:06,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:58:06,230 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 188 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:58:06,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106793034] [2020-09-25 07:58:06,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:58:06,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:58:06,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783098803] [2020-09-25 07:58:06,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:58:06,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:58:06,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:58:06,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:58:06,232 INFO L87 Difference]: Start difference. First operand 3394 states and 4391 transitions. Second operand 7 states. [2020-09-25 07:58:08,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:58:08,782 INFO L93 Difference]: Finished difference Result 7797 states and 10462 transitions. [2020-09-25 07:58:08,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:58:08,783 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 260 [2020-09-25 07:58:08,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:58:08,805 INFO L225 Difference]: With dead ends: 7797 [2020-09-25 07:58:08,806 INFO L226 Difference]: Without dead ends: 3448 [2020-09-25 07:58:08,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:58:08,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3448 states. [2020-09-25 07:58:08,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3448 to 3202. [2020-09-25 07:58:08,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3202 states. [2020-09-25 07:58:08,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3202 states to 3202 states and 4019 transitions. [2020-09-25 07:58:08,916 INFO L78 Accepts]: Start accepts. Automaton has 3202 states and 4019 transitions. Word has length 260 [2020-09-25 07:58:08,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:58:08,917 INFO L479 AbstractCegarLoop]: Abstraction has 3202 states and 4019 transitions. [2020-09-25 07:58:08,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:58:08,917 INFO L276 IsEmpty]: Start isEmpty. Operand 3202 states and 4019 transitions. [2020-09-25 07:58:08,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-09-25 07:58:08,925 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:58:08,926 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 07:58:08,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:58:08,926 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:58:08,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:58:08,927 INFO L82 PathProgramCache]: Analyzing trace with hash 796545311, now seen corresponding path program 1 times [2020-09-25 07:58:08,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:58:08,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578536833] [2020-09-25 07:58:08,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:58:09,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:09,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:09,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:09,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking...