/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --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_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:34:06,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:34:06,503 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:34:06,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:34:06,551 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:34:06,563 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:34:06,566 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:34:06,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:34:06,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:34:06,576 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:34:06,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:34:06,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:34:06,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:34:06,582 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:34:06,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:34:06,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:34:06,588 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:34:06,589 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:34:06,591 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:34:06,601 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:34:06,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:34:06,605 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:34:06,606 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:34:06,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:34:06,609 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:34:06,609 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:34:06,609 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:34:06,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:34:06,611 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:34:06,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:34:06,612 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:34:06,613 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:34:06,614 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:34:06,615 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:34:06,616 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:34:06,616 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:34:06,617 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:34:06,617 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:34:06,617 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:34:06,618 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:34:06,619 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:34:06,620 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 13:34:06,645 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:34:06,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:34:06,647 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:34:06,647 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:34:06,648 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:34:06,648 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:34:06,648 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:34:06,648 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:34:06,648 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:34:06,649 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:34:06,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:34:06,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:34:06,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:34:06,649 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:34:06,650 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:34:06,650 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:34:06,650 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:34:06,650 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:34:06,650 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:34:06,651 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:34:06,651 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:34:06,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:34:06,651 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:34:06,652 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:34:06,652 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:34:06,652 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:34:06,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:34:06,652 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:34:06,653 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:34:06,653 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:34:07,119 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:34:07,146 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:34:07,151 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:34:07,154 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:34:07,155 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:34:07,157 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label17.c [2020-09-25 13:34:07,247 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee9373c18/36b389fa5a5c4c35b30f4442fa8c4285/FLAG2c3b48f80 [2020-09-25 13:34:07,878 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:34:07,879 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label17.c [2020-09-25 13:34:07,893 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee9373c18/36b389fa5a5c4c35b30f4442fa8c4285/FLAG2c3b48f80 [2020-09-25 13:34:08,133 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee9373c18/36b389fa5a5c4c35b30f4442fa8c4285 [2020-09-25 13:34:08,147 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:34:08,154 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:34:08,155 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:34:08,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:34:08,160 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:34:08,161 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:34:08" (1/1) ... [2020-09-25 13:34:08,165 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18215cc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:08, skipping insertion in model container [2020-09-25 13:34:08,165 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:34:08" (1/1) ... [2020-09-25 13:34:08,175 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:34:08,237 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:34:08,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:34:08,733 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:34:08,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:34:08,995 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:34:08,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:08 WrapperNode [2020-09-25 13:34:08,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:34:08,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:34:08,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:34:08,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:34:09,016 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:08" (1/1) ... [2020-09-25 13:34:09,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:08" (1/1) ... [2020-09-25 13:34:09,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:08" (1/1) ... [2020-09-25 13:34:09,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:08" (1/1) ... [2020-09-25 13:34:09,079 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:08" (1/1) ... [2020-09-25 13:34:09,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:08" (1/1) ... [2020-09-25 13:34:09,103 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:08" (1/1) ... [2020-09-25 13:34:09,120 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:34:09,120 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:34:09,121 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:34:09,121 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:34:09,122 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:08" (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 13:34:09,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:34:09,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:34:09,211 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:34:09,211 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:34:09,211 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:34:09,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:34:09,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:34:09,212 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:34:09,212 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:34:09,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:34:09,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:34:10,659 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:34:10,660 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:34:10,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:34:10 BoogieIcfgContainer [2020-09-25 13:34:10,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:34:10,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:34:10,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:34:10,674 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:34:10,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:34:08" (1/3) ... [2020-09-25 13:34:10,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64fb2a99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:34:10, skipping insertion in model container [2020-09-25 13:34:10,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:08" (2/3) ... [2020-09-25 13:34:10,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64fb2a99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:34:10, skipping insertion in model container [2020-09-25 13:34:10,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:34:10" (3/3) ... [2020-09-25 13:34:10,679 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label17.c [2020-09-25 13:34:10,691 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:34:10,703 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:34:10,727 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:34:10,762 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:34:10,763 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:34:10,763 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:34:10,763 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:34:10,763 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:34:10,763 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:34:10,763 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:34:10,764 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:34:10,795 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 13:34:10,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 13:34:10,806 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:10,807 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] [2020-09-25 13:34:10,808 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:10,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:10,816 INFO L82 PathProgramCache]: Analyzing trace with hash -796596049, now seen corresponding path program 1 times [2020-09-25 13:34:10,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:10,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [631807811] [2020-09-25 13:34:10,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:10,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:11,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:11,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:11,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:11,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:11,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-25 13:34:11,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:34:11,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 652 [2020-09-25 13:34:11,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:11,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:11,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:34:11,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:34:11,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 13:34:11,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:34:11,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:11,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:11,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:11,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:11,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:11,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:11,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 13:34:11,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:11,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:11,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:11,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:11,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:34:11,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:34:11,900 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 13:34:11,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [631807811] [2020-09-25 13:34:11,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:34:11,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:34:11,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099005248] [2020-09-25 13:34:11,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:34:11,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:11,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:34:11,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:34:11,940 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 13:34:14,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:14,225 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 13:34:14,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:34:14,227 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-09-25 13:34:14,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:14,249 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 13:34:14,250 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 13:34:14,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:34:14,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 13:34:14,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 13:34:14,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 13:34:14,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 13:34:14,363 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 49 [2020-09-25 13:34:14,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:14,364 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 13:34:14,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:34:14,364 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 13:34:14,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-25 13:34:14,372 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:14,372 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:34:14,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:34:14,373 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:14,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:14,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1427265920, now seen corresponding path program 1 times [2020-09-25 13:34:14,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:14,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1514655326] [2020-09-25 13:34:14,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:14,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:14,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:14,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:14,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:14,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:15,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:15,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:15,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:19,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:19,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 13:34:19,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:34:19,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 13:34:19,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:19,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:19,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:34:19,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 13:34:19,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 13:34:19,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:19,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:19,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:19,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:19,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:19,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:19,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:19,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 13:34:19,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:19,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:19,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:19,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:19,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:34:19,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:19,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:19,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:19,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:19,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:19,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:19,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:34:19,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:34:19,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-09-25 13:34:19,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:19,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:19,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:19,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:19,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 13:34:19,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:19,844 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 13:34:19,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1514655326] [2020-09-25 13:34:19,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:19,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:34:19,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726119297] [2020-09-25 13:34:19,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:34:19,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:19,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:34:19,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:34:19,854 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 5 states. [2020-09-25 13:34:21,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:21,615 INFO L93 Difference]: Finished difference Result 1224 states and 1530 transitions. [2020-09-25 13:34:21,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:34:21,616 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-09-25 13:34:21,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:21,625 INFO L225 Difference]: With dead ends: 1224 [2020-09-25 13:34:21,626 INFO L226 Difference]: Without dead ends: 695 [2020-09-25 13:34:21,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 13:34:21,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-09-25 13:34:21,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2020-09-25 13:34:21,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 13:34:21,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 850 transitions. [2020-09-25 13:34:21,694 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 850 transitions. Word has length 128 [2020-09-25 13:34:21,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:21,698 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 850 transitions. [2020-09-25 13:34:21,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:34:21,699 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 850 transitions. [2020-09-25 13:34:21,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 13:34:21,713 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:21,713 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:34:21,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:34:21,714 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:21,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:21,714 INFO L82 PathProgramCache]: Analyzing trace with hash -863517790, now seen corresponding path program 1 times [2020-09-25 13:34:21,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:21,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896246393] [2020-09-25 13:34:21,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:21,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:21,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:21,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:21,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:22,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:22,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:25,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:25,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:26,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:26,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:26,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-09-25 13:34:26,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:34:26,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 13:34:26,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:26,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:26,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:34:26,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:34:26,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 13:34:26,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:26,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:26,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:26,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:26,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:26,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:26,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:26,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:34:26,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:26,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:26,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:26,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:26,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:34:26,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:34:26,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:26,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:26,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:27,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:27,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:34:27,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:27,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-25 13:34:27,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:27,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:27,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:34:27,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:34:27,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:34:27,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:27,179 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:34:27,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896246393] [2020-09-25 13:34:27,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:27,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:34:27,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035536872] [2020-09-25 13:34:27,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:34:27,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:27,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:34:27,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:34:27,182 INFO L87 Difference]: Start difference. First operand 695 states and 850 transitions. Second operand 8 states. [2020-09-25 13:34:30,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:30,540 INFO L93 Difference]: Finished difference Result 1641 states and 2086 transitions. [2020-09-25 13:34:30,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:34:30,545 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 138 [2020-09-25 13:34:30,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:30,554 INFO L225 Difference]: With dead ends: 1641 [2020-09-25 13:34:30,554 INFO L226 Difference]: Without dead ends: 1111 [2020-09-25 13:34:30,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:34:30,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2020-09-25 13:34:30,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 1038. [2020-09-25 13:34:30,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1038 states. [2020-09-25 13:34:30,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1262 transitions. [2020-09-25 13:34:30,611 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1262 transitions. Word has length 138 [2020-09-25 13:34:30,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:30,612 INFO L479 AbstractCegarLoop]: Abstraction has 1038 states and 1262 transitions. [2020-09-25 13:34:30,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:34:30,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1262 transitions. [2020-09-25 13:34:30,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 13:34:30,622 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:30,622 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:34:30,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:34:30,623 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:30,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:30,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1456961498, now seen corresponding path program 1 times [2020-09-25 13:34:30,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:30,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563935571] [2020-09-25 13:34:30,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:30,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:30,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:30,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:30,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:31,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:31,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:33,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:33,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 13:34:33,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:34:33,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2662 [2020-09-25 13:34:33,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:33,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:33,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:34:33,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 13:34:33,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 13:34:33,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:33,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:33,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:33,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:33,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:33,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:33,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:33,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:34:33,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:33,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:33,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:33,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:33,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:34:33,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:33,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:33,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:33,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:33,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:33,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 13:34:33,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:33,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-09-25 13:34:33,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:33,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:33,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:34:33,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:34:33,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 13:34:33,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:33,621 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:34:33,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563935571] [2020-09-25 13:34:33,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:34:33,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:34:33,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908819392] [2020-09-25 13:34:33,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:34:33,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:33,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:34:33,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:34:33,624 INFO L87 Difference]: Start difference. First operand 1038 states and 1262 transitions. Second operand 7 states. [2020-09-25 13:34:35,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:35,894 INFO L93 Difference]: Finished difference Result 2440 states and 3095 transitions. [2020-09-25 13:34:35,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:34:35,896 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 140 [2020-09-25 13:34:35,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:35,912 INFO L225 Difference]: With dead ends: 2440 [2020-09-25 13:34:35,912 INFO L226 Difference]: Without dead ends: 1576 [2020-09-25 13:34:35,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:34:35,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2020-09-25 13:34:35,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 1510. [2020-09-25 13:34:35,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1510 states. [2020-09-25 13:34:35,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1510 states to 1510 states and 1777 transitions. [2020-09-25 13:34:35,992 INFO L78 Accepts]: Start accepts. Automaton has 1510 states and 1777 transitions. Word has length 140 [2020-09-25 13:34:35,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:35,993 INFO L479 AbstractCegarLoop]: Abstraction has 1510 states and 1777 transitions. [2020-09-25 13:34:35,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:34:35,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1510 states and 1777 transitions. [2020-09-25 13:34:35,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-09-25 13:34:35,997 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:35,998 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 13:34:35,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:34:35,998 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:35,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:35,998 INFO L82 PathProgramCache]: Analyzing trace with hash 275637238, now seen corresponding path program 1 times [2020-09-25 13:34:35,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:35,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320163477] [2020-09-25 13:34:35,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:36,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:36,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:36,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:36,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:37,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:37,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:39,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:39,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:39,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:39,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:39,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-09-25 13:34:39,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:34:39,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3921 [2020-09-25 13:34:39,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:39,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:39,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:34:39,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 13:34:39,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 13:34:39,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:34:40,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:40,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:40,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:40,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:40,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:40,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:40,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:34:40,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:40,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:40,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:34:40,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:40,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:34:40,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:40,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:40,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:40,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:40,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:40,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:34:40,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:40,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-25 13:34:40,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:40,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:40,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:34:40,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:40,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 13:34:40,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:40,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 13:34:40,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:40,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:40,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:40,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:40,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 13:34:40,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:34:40,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-09-25 13:34:40,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:40,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:40,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:34:40,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:34:40,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 13:34:40,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:40,687 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 102 proven. 29 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 13:34:40,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320163477] [2020-09-25 13:34:40,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:40,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:34:40,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301123876] [2020-09-25 13:34:40,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:34:40,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:40,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:34:40,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:34:40,691 INFO L87 Difference]: Start difference. First operand 1510 states and 1777 transitions. Second operand 8 states. [2020-09-25 13:34:43,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:43,486 INFO L93 Difference]: Finished difference Result 3584 states and 4497 transitions. [2020-09-25 13:34:43,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 13:34:43,490 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 208 [2020-09-25 13:34:43,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:43,507 INFO L225 Difference]: With dead ends: 3584 [2020-09-25 13:34:43,508 INFO L226 Difference]: Without dead ends: 2726 [2020-09-25 13:34:43,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-09-25 13:34:43,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2726 states. [2020-09-25 13:34:43,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2726 to 2339. [2020-09-25 13:34:43,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2339 states. [2020-09-25 13:34:43,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2339 states to 2339 states and 2970 transitions. [2020-09-25 13:34:43,600 INFO L78 Accepts]: Start accepts. Automaton has 2339 states and 2970 transitions. Word has length 208 [2020-09-25 13:34:43,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:43,601 INFO L479 AbstractCegarLoop]: Abstraction has 2339 states and 2970 transitions. [2020-09-25 13:34:43,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:34:43,601 INFO L276 IsEmpty]: Start isEmpty. Operand 2339 states and 2970 transitions. [2020-09-25 13:34:43,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-09-25 13:34:43,606 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:43,606 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 13:34:43,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:34:43,606 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:43,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:43,607 INFO L82 PathProgramCache]: Analyzing trace with hash -2078590991, now seen corresponding path program 1 times [2020-09-25 13:34:43,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:43,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62593383] [2020-09-25 13:34:43,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:43,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:43,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:43,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:43,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:45,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:45,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:45,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:45,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:45,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:46,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:48,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:48,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-09-25 13:34:48,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:34:48,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 13:34:48,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:48,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:48,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:34:48,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 13:34:48,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 13:34:48,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:48,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:48,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:48,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:48,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:48,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:48,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:48,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:34:48,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:48,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:48,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:34:48,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:48,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:34:48,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:48,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:48,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:48,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:48,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:48,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:34:48,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:48,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 13:34:48,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:48,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:48,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:34:48,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:48,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 13:34:48,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:48,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 13:34:48,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:48,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:49,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:49,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:49,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:34:49,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:34:49,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-09-25 13:34:49,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:49,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:49,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:34:49,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:49,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 13:34:49,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:49,324 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 76 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 13:34:49,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62593383] [2020-09-25 13:34:49,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:49,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:34:49,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994385530] [2020-09-25 13:34:49,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:34:49,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:49,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:34:49,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:34:49,326 INFO L87 Difference]: Start difference. First operand 2339 states and 2970 transitions. Second operand 8 states. [2020-09-25 13:34:52,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:52,791 INFO L93 Difference]: Finished difference Result 5648 states and 7537 transitions. [2020-09-25 13:34:52,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 13:34:52,792 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 217 [2020-09-25 13:34:52,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:52,815 INFO L225 Difference]: With dead ends: 5648 [2020-09-25 13:34:52,816 INFO L226 Difference]: Without dead ends: 3963 [2020-09-25 13:34:52,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:34:52,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3963 states. [2020-09-25 13:34:52,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3963 to 3271. [2020-09-25 13:34:52,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3271 states. [2020-09-25 13:34:52,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3271 states to 3271 states and 4338 transitions. [2020-09-25 13:34:52,944 INFO L78 Accepts]: Start accepts. Automaton has 3271 states and 4338 transitions. Word has length 217 [2020-09-25 13:34:52,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:52,945 INFO L479 AbstractCegarLoop]: Abstraction has 3271 states and 4338 transitions. [2020-09-25 13:34:52,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:34:52,945 INFO L276 IsEmpty]: Start isEmpty. Operand 3271 states and 4338 transitions. [2020-09-25 13:34:52,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-09-25 13:34:52,951 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:52,951 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 13:34:52,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:34:52,952 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:52,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:52,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1170652356, now seen corresponding path program 1 times [2020-09-25 13:34:52,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:52,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [388463909] [2020-09-25 13:34:52,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:52,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:53,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:53,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:53,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:53,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:53,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking...