/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 SequenceOfStatements --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=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label25.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:29:49,492 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:29:49,495 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:29:49,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:29:49,521 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:29:49,522 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:29:49,524 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:29:49,526 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:29:49,528 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:29:49,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:29:49,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:29:49,531 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:29:49,532 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:29:49,533 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:29:49,534 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:29:49,536 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:29:49,537 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:29:49,538 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:29:49,543 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:29:49,546 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:29:49,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:29:49,555 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:29:49,556 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:29:49,559 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:29:49,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:29:49,562 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:29:49,565 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:29:49,568 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:29:49,569 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:29:49,570 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:29:49,570 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:29:49,571 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:29:49,572 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:29:49,576 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:29:49,578 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:29:49,578 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:29:49,579 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:29:49,579 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:29:49,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:29:49,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:29:49,584 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:29:49,585 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 [2020-10-14 22:29:49,645 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:29:49,645 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:29:49,647 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:29:49,652 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:29:49,652 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:29:49,653 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:29:49,653 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:29:49,653 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:29:49,653 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:29:49,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:29:49,654 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:29:49,654 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:29:49,654 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:29:49,654 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:29:49,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:29:49,655 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:29:49,655 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:29:49,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:29:49,658 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:29:49,658 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:29:49,658 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:29:49,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:29:49,659 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:29:49,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:29:49,659 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:29:49,659 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:29:49,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:29:49,660 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:29:49,660 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:29:49,660 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 -> SequenceOfStatements 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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 22:29:50,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:29:50,074 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:29:50,081 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:29:50,083 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:29:50,083 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:29:50,084 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label25.c [2020-10-14 22:29:50,169 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df0787a1e/022985ff4e474dbc9e8aa16d8876f7c3/FLAG60642ac96 [2020-10-14 22:29:50,926 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:29:50,927 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label25.c [2020-10-14 22:29:50,963 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df0787a1e/022985ff4e474dbc9e8aa16d8876f7c3/FLAG60642ac96 [2020-10-14 22:29:51,017 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df0787a1e/022985ff4e474dbc9e8aa16d8876f7c3 [2020-10-14 22:29:51,030 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:29:51,033 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:29:51,037 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:29:51,038 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:29:51,042 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:29:51,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:29:51" (1/1) ... [2020-10-14 22:29:51,049 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2016f310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:29:51, skipping insertion in model container [2020-10-14 22:29:51,049 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:29:51" (1/1) ... [2020-10-14 22:29:51,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:29:51,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:29:52,579 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:29:52,586 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:29:52,991 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:29:53,021 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:29:53,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:29:53 WrapperNode [2020-10-14 22:29:53,031 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:29:53,032 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:29:53,033 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:29:53,033 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:29:53,055 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:29:53" (1/1) ... [2020-10-14 22:29:53,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:29:53" (1/1) ... [2020-10-14 22:29:53,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:29:53" (1/1) ... [2020-10-14 22:29:53,142 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:29:53" (1/1) ... [2020-10-14 22:29:53,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:29:53" (1/1) ... [2020-10-14 22:29:53,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:29:53" (1/1) ... [2020-10-14 22:29:53,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:29:53" (1/1) ... [2020-10-14 22:29:53,383 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:29:53,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:29:53,384 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:29:53,384 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:29:53,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:29:53" (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 [2020-10-14 22:29:53,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:29:53,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:29:53,475 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:29:53,476 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:29:53,476 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:29:53,476 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:29:53,477 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:29:53,478 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:29:53,478 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:29:53,479 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:29:53,479 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:29:53,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:29:53,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:30:02,656 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:30:02,657 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:30:02,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:30:02 BoogieIcfgContainer [2020-10-14 22:30:02,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:30:02,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:30:02,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:30:02,681 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:30:02,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:29:51" (1/3) ... [2020-10-14 22:30:02,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18c76bb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:30:02, skipping insertion in model container [2020-10-14 22:30:02,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:29:53" (2/3) ... [2020-10-14 22:30:02,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18c76bb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:30:02, skipping insertion in model container [2020-10-14 22:30:02,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:30:02" (3/3) ... [2020-10-14 22:30:02,689 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label25.c [2020-10-14 22:30:02,700 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:30:02,714 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:30:02,729 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:30:02,762 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:30:02,762 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:30:02,762 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:30:02,762 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:30:02,763 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:30:02,763 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:30:02,763 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:30:02,763 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:30:02,802 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 22:30:02,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 22:30:02,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:30:02,816 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] [2020-10-14 22:30:02,816 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:30:02,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:30:02,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1278977025, now seen corresponding path program 1 times [2020-10-14 22:30:02,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:30:02,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678525239] [2020-10-14 22:30:02,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:30:03,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:03,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:03,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:03,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 22:30:03,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:03,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 466 [2020-10-14 22:30:03,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:03,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:03,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:30:03,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:30:03,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 22:30:03,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:30:03,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:30:03,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:03,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:03,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:03,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:30:03,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:03,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 22:30:03,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:03,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:03,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:30:03,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:30:03,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:30:03,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:30:03,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:30:03,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678525239] [2020-10-14 22:30:03,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:30:03,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 22:30:03,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599610722] [2020-10-14 22:30:03,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 22:30:03,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:30:03,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 22:30:03,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 22:30:03,719 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 22:30:15,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:30:15,204 INFO L93 Difference]: Finished difference Result 1689 states and 3086 transitions. [2020-10-14 22:30:15,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:30:15,207 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-14 22:30:15,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:30:15,233 INFO L225 Difference]: With dead ends: 1689 [2020-10-14 22:30:15,234 INFO L226 Difference]: Without dead ends: 1009 [2020-10-14 22:30:15,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:30:15,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2020-10-14 22:30:15,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 991. [2020-10-14 22:30:15,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 991 states. [2020-10-14 22:30:15,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1526 transitions. [2020-10-14 22:30:15,380 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1526 transitions. Word has length 29 [2020-10-14 22:30:15,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:30:15,382 INFO L479 AbstractCegarLoop]: Abstraction has 991 states and 1526 transitions. [2020-10-14 22:30:15,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 22:30:15,382 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1526 transitions. [2020-10-14 22:30:15,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 22:30:15,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:30:15,393 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:30:15,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:30:15,395 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:30:15,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:30:15,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1050866857, now seen corresponding path program 1 times [2020-10-14 22:30:15,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:30:15,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426090012] [2020-10-14 22:30:15,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:30:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:15,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:15,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:16,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:16,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:16,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 22:30:16,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:30:16,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1505 [2020-10-14 22:30:16,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:16,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:16,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:30:16,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:30:16,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 22:30:16,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:30:17,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:30:17,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:17,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:17,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:17,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:30:17,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:17,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 22:30:17,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:17,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:17,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:30:17,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:30:17,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:30:17,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:17,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:30:17,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:17,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:17,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:17,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:17,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:30:17,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:30:17,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-14 22:30:17,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:17,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:17,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:30:17,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:30:17,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:30:17,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:17,522 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 22:30:17,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426090012] [2020-10-14 22:30:17,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:30:17,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:30:17,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134733816] [2020-10-14 22:30:17,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 22:30:17,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:30:17,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 22:30:17,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:30:17,528 INFO L87 Difference]: Start difference. First operand 991 states and 1526 transitions. Second operand 6 states. [2020-10-14 22:30:33,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:30:33,834 INFO L93 Difference]: Finished difference Result 2451 states and 3903 transitions. [2020-10-14 22:30:33,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 22:30:33,836 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2020-10-14 22:30:33,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:30:33,845 INFO L225 Difference]: With dead ends: 2451 [2020-10-14 22:30:33,845 INFO L226 Difference]: Without dead ends: 1466 [2020-10-14 22:30:33,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:30:33,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2020-10-14 22:30:33,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1452. [2020-10-14 22:30:33,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1452 states. [2020-10-14 22:30:33,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 1973 transitions. [2020-10-14 22:30:33,918 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 1973 transitions. Word has length 100 [2020-10-14 22:30:33,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:30:33,919 INFO L479 AbstractCegarLoop]: Abstraction has 1452 states and 1973 transitions. [2020-10-14 22:30:33,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 22:30:33,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 1973 transitions. [2020-10-14 22:30:33,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 22:30:33,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:30:33,922 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:30:33,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:30:33,922 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:30:33,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:30:33,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1805651625, now seen corresponding path program 1 times [2020-10-14 22:30:33,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:30:33,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983858409] [2020-10-14 22:30:33,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:30:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:33,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:34,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:34,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 22:30:34,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:34,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-14 22:30:34,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:34,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:34,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:30:34,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 22:30:34,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 22:30:34,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:34,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:30:34,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:34,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:34,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:34,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:30:34,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:34,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:30:34,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:34,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:34,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:30:34,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:30:34,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:30:34,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:34,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:30:34,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:34,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:34,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:34,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:30:34,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:34,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 22:30:34,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:34,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:34,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:30:34,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:30:34,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 22:30:34,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:34,525 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:30:34,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983858409] [2020-10-14 22:30:34,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:30:34,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:30:34,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361996977] [2020-10-14 22:30:34,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:30:34,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:30:34,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:30:34,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:30:34,529 INFO L87 Difference]: Start difference. First operand 1452 states and 1973 transitions. Second operand 5 states. [2020-10-14 22:30:49,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:30:49,536 INFO L93 Difference]: Finished difference Result 3378 states and 4876 transitions. [2020-10-14 22:30:49,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:30:49,538 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-14 22:30:49,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:30:49,553 INFO L225 Difference]: With dead ends: 3378 [2020-10-14 22:30:49,553 INFO L226 Difference]: Without dead ends: 2365 [2020-10-14 22:30:49,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:30:49,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2365 states. [2020-10-14 22:30:49,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2365 to 2355. [2020-10-14 22:30:49,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2355 states. [2020-10-14 22:30:49,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2355 states to 2355 states and 3070 transitions. [2020-10-14 22:30:49,628 INFO L78 Accepts]: Start accepts. Automaton has 2355 states and 3070 transitions. Word has length 103 [2020-10-14 22:30:49,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:30:49,630 INFO L479 AbstractCegarLoop]: Abstraction has 2355 states and 3070 transitions. [2020-10-14 22:30:49,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:30:49,630 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 3070 transitions. [2020-10-14 22:30:49,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-14 22:30:49,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:30:49,633 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:30:49,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:30:49,634 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:30:49,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:30:49,634 INFO L82 PathProgramCache]: Analyzing trace with hash 60165866, now seen corresponding path program 1 times [2020-10-14 22:30:49,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:30:49,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713145092] [2020-10-14 22:30:49,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:30:49,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:49,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:49,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:52,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:52,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 22:30:52,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:30:52,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2484 [2020-10-14 22:30:52,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:52,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:52,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:30:52,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:30:52,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 22:30:52,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:30:52,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:30:52,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:52,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:52,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:52,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:30:52,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:52,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 22:30:52,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:52,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:52,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:30:52,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:30:52,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:30:52,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:52,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:30:52,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:52,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:52,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:52,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 22:30:52,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:52,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-14 22:30:52,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:52,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:52,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:30:52,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:30:52,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:30:52,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:52,815 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:30:52,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713145092] [2020-10-14 22:30:52,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:30:52,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:30:52,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385742605] [2020-10-14 22:30:52,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:30:52,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:30:52,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:30:52,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:30:52,818 INFO L87 Difference]: Start difference. First operand 2355 states and 3070 transitions. Second operand 7 states. [2020-10-14 22:31:11,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:31:11,256 INFO L93 Difference]: Finished difference Result 5234 states and 7150 transitions. [2020-10-14 22:31:11,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:31:11,258 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 138 [2020-10-14 22:31:11,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:31:11,279 INFO L225 Difference]: With dead ends: 5234 [2020-10-14 22:31:11,279 INFO L226 Difference]: Without dead ends: 3318 [2020-10-14 22:31:11,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:31:11,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3318 states. [2020-10-14 22:31:11,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3318 to 2846. [2020-10-14 22:31:11,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2846 states. [2020-10-14 22:31:11,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2846 states to 2846 states and 3644 transitions. [2020-10-14 22:31:11,382 INFO L78 Accepts]: Start accepts. Automaton has 2846 states and 3644 transitions. Word has length 138 [2020-10-14 22:31:11,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:31:11,383 INFO L479 AbstractCegarLoop]: Abstraction has 2846 states and 3644 transitions. [2020-10-14 22:31:11,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:31:11,384 INFO L276 IsEmpty]: Start isEmpty. Operand 2846 states and 3644 transitions. [2020-10-14 22:31:11,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-14 22:31:11,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:31:11,388 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:31:11,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:31:11,388 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:31:11,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:31:11,389 INFO L82 PathProgramCache]: Analyzing trace with hash -363314218, now seen corresponding path program 1 times [2020-10-14 22:31:11,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:31:11,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522541931] [2020-10-14 22:31:11,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:31:11,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:11,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:11,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:12,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:12,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-14 22:31:12,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:31:12,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 860 [2020-10-14 22:31:12,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:12,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:12,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:31:12,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:31:12,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 22:31:12,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:31:12,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:31:12,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:12,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:12,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:12,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:31:12,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:12,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:31:12,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:12,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:12,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:31:12,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:31:12,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:31:12,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:31:12,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:31:12,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:12,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:12,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:12,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 22:31:12,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:12,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-14 22:31:12,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:12,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:12,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:31:12,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:31:12,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 22:31:12,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 22:31:12,791 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:31:12,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522541931] [2020-10-14 22:31:12,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:31:12,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:31:12,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684753345] [2020-10-14 22:31:12,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:31:12,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:31:12,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:31:12,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:31:12,799 INFO L87 Difference]: Start difference. First operand 2846 states and 3644 transitions. Second operand 7 states. [2020-10-14 22:31:30,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:31:30,630 INFO L93 Difference]: Finished difference Result 8427 states and 10941 transitions. [2020-10-14 22:31:30,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:31:30,635 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 144 [2020-10-14 22:31:30,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:31:30,657 INFO L225 Difference]: With dead ends: 8427 [2020-10-14 22:31:30,657 INFO L226 Difference]: Without dead ends: 4681 [2020-10-14 22:31:30,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:31:30,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4681 states. [2020-10-14 22:31:30,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4681 to 4197. [2020-10-14 22:31:30,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4197 states. [2020-10-14 22:31:30,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4197 states to 4197 states and 4870 transitions. [2020-10-14 22:31:30,803 INFO L78 Accepts]: Start accepts. Automaton has 4197 states and 4870 transitions. Word has length 144 [2020-10-14 22:31:30,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:31:30,803 INFO L479 AbstractCegarLoop]: Abstraction has 4197 states and 4870 transitions. [2020-10-14 22:31:30,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:31:30,804 INFO L276 IsEmpty]: Start isEmpty. Operand 4197 states and 4870 transitions. [2020-10-14 22:31:30,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-14 22:31:30,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:31:30,810 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:31:30,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:31:30,811 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:31:30,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:31:30,811 INFO L82 PathProgramCache]: Analyzing trace with hash 79102949, now seen corresponding path program 1 times [2020-10-14 22:31:30,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:31:30,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743120844] [2020-10-14 22:31:30,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:31:30,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:30,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:31,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:31,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:31,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 22:31:31,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:31:31,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1023 [2020-10-14 22:31:31,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:31,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:31,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:31:31,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:31:31,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:31:31,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:31:32,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:31:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:32,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:32,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:32,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:31:32,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:32,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:31:32,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:32,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:32,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:31:32,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:31:32,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:31:32,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:31:32,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:31:32,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:32,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:32,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:32,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:31:32,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:32,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-14 22:31:32,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:32,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:32,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:31:32,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:31:32,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:31:32,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:31:32,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:31:32,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:32,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:32,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:32,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 22:31:32,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:32,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-14 22:31:32,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:32,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:32,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:31:32,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:31:32,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 22:31:32,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:31:32,474 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 114 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:31:32,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743120844] [2020-10-14 22:31:32,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:31:32,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:31:32,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100543000] [2020-10-14 22:31:32,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:31:32,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:31:32,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:31:32,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:31:32,478 INFO L87 Difference]: Start difference. First operand 4197 states and 4870 transitions. Second operand 7 states. [2020-10-14 22:31:51,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:31:51,742 INFO L93 Difference]: Finished difference Result 12511 states and 15616 transitions. [2020-10-14 22:31:51,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:31:51,745 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 189 [2020-10-14 22:31:51,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:31:51,782 INFO L225 Difference]: With dead ends: 12511 [2020-10-14 22:31:51,783 INFO L226 Difference]: Without dead ends: 8320 [2020-10-14 22:31:51,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:31:51,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8320 states. [2020-10-14 22:31:51,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8320 to 8303. [2020-10-14 22:31:51,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8303 states. [2020-10-14 22:31:52,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8303 states to 8303 states and 9945 transitions. [2020-10-14 22:31:52,002 INFO L78 Accepts]: Start accepts. Automaton has 8303 states and 9945 transitions. Word has length 189 [2020-10-14 22:31:52,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:31:52,003 INFO L479 AbstractCegarLoop]: Abstraction has 8303 states and 9945 transitions. [2020-10-14 22:31:52,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:31:52,003 INFO L276 IsEmpty]: Start isEmpty. Operand 8303 states and 9945 transitions. [2020-10-14 22:31:52,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-14 22:31:52,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:31:52,006 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:31:52,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:31:52,007 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:31:52,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:31:52,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1680126423, now seen corresponding path program 1 times [2020-10-14 22:31:52,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:31:52,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449342117] [2020-10-14 22:31:52,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:31:52,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:52,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:52,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:52,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:54,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:55,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:55,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-14 22:31:55,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:31:55,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3767 [2020-10-14 22:31:55,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:55,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:55,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:31:55,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:31:55,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-14 22:31:55,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:31:55,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:31:55,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:55,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:55,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:55,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:31:55,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:55,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:31:55,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:55,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:55,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:31:55,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:31:55,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:31:55,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:31:55,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:31:56,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:56,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:56,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:56,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:31:56,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:56,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-14 22:31:56,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:56,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:56,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:31:56,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:31:56,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:31:56,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:31:56,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:31:56,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:56,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:56,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:56,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:31:56,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:56,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-14 22:31:56,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:56,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:56,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:31:56,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:31:56,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:31:56,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:31:56,590 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 113 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:31:56,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449342117] [2020-10-14 22:31:56,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:31:56,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 22:31:56,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166557162] [2020-10-14 22:31:56,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 22:31:56,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:31:56,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 22:31:56,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:31:56,593 INFO L87 Difference]: Start difference. First operand 8303 states and 9945 transitions. Second operand 10 states. [2020-10-14 22:32:00,731 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2020-10-14 22:32:15,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:32:15,217 INFO L93 Difference]: Finished difference Result 20306 states and 25307 transitions. [2020-10-14 22:32:15,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 22:32:15,220 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 191 [2020-10-14 22:32:15,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:32:15,277 INFO L225 Difference]: With dead ends: 20306 [2020-10-14 22:32:15,278 INFO L226 Difference]: Without dead ends: 12012 [2020-10-14 22:32:15,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-10-14 22:32:15,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12012 states. [2020-10-14 22:32:15,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12012 to 11928. [2020-10-14 22:32:15,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11928 states. [2020-10-14 22:32:15,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11928 states to 11928 states and 14092 transitions. [2020-10-14 22:32:15,565 INFO L78 Accepts]: Start accepts. Automaton has 11928 states and 14092 transitions. Word has length 191 [2020-10-14 22:32:15,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:32:15,566 INFO L479 AbstractCegarLoop]: Abstraction has 11928 states and 14092 transitions. [2020-10-14 22:32:15,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 22:32:15,566 INFO L276 IsEmpty]: Start isEmpty. Operand 11928 states and 14092 transitions. [2020-10-14 22:32:15,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-14 22:32:15,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:32:15,569 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:32:15,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:32:15,569 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:32:15,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:32:15,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1479650210, now seen corresponding path program 1 times [2020-10-14 22:32:15,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:32:15,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152091254] [2020-10-14 22:32:15,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:32:15,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:15,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:15,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:15,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:20,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:20,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-14 22:32:20,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:32:20,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4636 [2020-10-14 22:32:20,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:20,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:20,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:32:20,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:32:20,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 22:32:20,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:32:20,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:32:20,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:20,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:20,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:20,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:32:20,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:32:20,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:32:20,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:20,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:20,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:32:20,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:32:20,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:32:20,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:32:20,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:32:20,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:20,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:20,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:20,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:32:20,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:32:20,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-14 22:32:20,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:20,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:20,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:32:20,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:32:20,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:32:20,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:32:20,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:32:20,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:20,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:20,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:21,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:21,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:32:21,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:32:21,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-10-14 22:32:21,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:21,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:21,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:32:21,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:32:21,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:32:21,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:32:21,122 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 42 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 22:32:21,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152091254] [2020-10-14 22:32:21,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:32:21,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:32:21,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735056609] [2020-10-14 22:32:21,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:32:21,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:32:21,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:32:21,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:32:21,126 INFO L87 Difference]: Start difference. First operand 11928 states and 14092 transitions. Second operand 5 states. [2020-10-14 22:32:35,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:32:35,031 INFO L93 Difference]: Finished difference Result 23850 states and 28664 transitions. [2020-10-14 22:32:35,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:32:35,034 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 202 [2020-10-14 22:32:35,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:32:35,078 INFO L225 Difference]: With dead ends: 23850 [2020-10-14 22:32:35,078 INFO L226 Difference]: Without dead ends: 12372 [2020-10-14 22:32:35,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:32:35,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12372 states. [2020-10-14 22:32:35,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12372 to 12365. [2020-10-14 22:32:35,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12365 states. [2020-10-14 22:32:35,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12365 states to 12365 states and 14754 transitions. [2020-10-14 22:32:35,377 INFO L78 Accepts]: Start accepts. Automaton has 12365 states and 14754 transitions. Word has length 202 [2020-10-14 22:32:35,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:32:35,378 INFO L479 AbstractCegarLoop]: Abstraction has 12365 states and 14754 transitions. [2020-10-14 22:32:35,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:32:35,378 INFO L276 IsEmpty]: Start isEmpty. Operand 12365 states and 14754 transitions. [2020-10-14 22:32:35,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-14 22:32:35,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:32:35,386 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:32:35,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:32:35,386 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:32:35,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:32:35,387 INFO L82 PathProgramCache]: Analyzing trace with hash -553119654, now seen corresponding path program 1 times [2020-10-14 22:32:35,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:32:35,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263802939] [2020-10-14 22:32:35,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:32:35,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:35,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:35,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:36,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:37,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:37,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:37,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:32:37,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:32:37,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2362 [2020-10-14 22:32:37,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:37,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:37,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 22:32:37,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:32:37,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-14 22:32:37,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:32:37,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:32:37,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:37,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:38,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:38,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:32:38,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:32:38,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:32:38,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:38,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:38,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:32:38,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:32:38,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:32:38,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:32:38,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:32:38,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:38,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:38,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:38,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:32:38,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:32:38,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-14 22:32:38,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:38,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:38,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:32:38,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:32:38,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:32:38,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:32:38,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:32:38,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:38,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:38,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:38,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:32:38,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:32:38,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-14 22:32:38,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:38,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:38,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:32:38,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:32:38,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 22:32:38,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:32:38,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:32:38,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:38,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:38,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:38,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:32:38,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:32:38,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 22:32:38,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:38,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:38,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:32:38,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:32:38,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:32:38,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:32:39,141 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 143 proven. 70 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-14 22:32:39,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263802939] [2020-10-14 22:32:39,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:32:39,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:32:39,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198547026] [2020-10-14 22:32:39,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 22:32:39,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:32:39,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 22:32:39,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-14 22:32:39,155 INFO L87 Difference]: Start difference. First operand 12365 states and 14754 transitions. Second operand 9 states. [2020-10-14 22:32:45,723 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2020-10-14 22:33:00,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:33:00,005 INFO L93 Difference]: Finished difference Result 27024 states and 33329 transitions. [2020-10-14 22:33:00,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 22:33:00,007 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 273 [2020-10-14 22:33:00,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:33:00,073 INFO L225 Difference]: With dead ends: 27024 [2020-10-14 22:33:00,074 INFO L226 Difference]: Without dead ends: 15109 [2020-10-14 22:33:00,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-14 22:33:00,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15109 states. [2020-10-14 22:33:00,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15109 to 14609. [2020-10-14 22:33:00,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14609 states. [2020-10-14 22:33:00,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14609 states to 14609 states and 17379 transitions. [2020-10-14 22:33:00,420 INFO L78 Accepts]: Start accepts. Automaton has 14609 states and 17379 transitions. Word has length 273 [2020-10-14 22:33:00,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:33:00,420 INFO L479 AbstractCegarLoop]: Abstraction has 14609 states and 17379 transitions. [2020-10-14 22:33:00,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 22:33:00,421 INFO L276 IsEmpty]: Start isEmpty. Operand 14609 states and 17379 transitions. [2020-10-14 22:33:00,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-10-14 22:33:00,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:33:00,426 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:33:00,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:33:00,427 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:33:00,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:33:00,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1755845188, now seen corresponding path program 1 times [2020-10-14 22:33:00,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:33:00,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473947231] [2020-10-14 22:33:00,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:33:00,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:00,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:00,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:01,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:02,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:04,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:04,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-14 22:33:04,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:33:04,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3910 [2020-10-14 22:33:04,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:04,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:04,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:33:04,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:33:04,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:33:04,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:33:04,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:33:04,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:04,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:04,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:04,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:33:04,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:33:04,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:33:04,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:04,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:04,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:33:04,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:33:04,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:33:04,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:33:04,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:33:04,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:04,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:04,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:04,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:33:04,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:33:04,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 22:33:04,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:04,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:04,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:33:04,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:33:04,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:33:04,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:33:04,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:33:04,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:04,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:04,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:04,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 22:33:04,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:33:04,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-14 22:33:04,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:04,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:04,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:33:04,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:33:04,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:33:04,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:33:05,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-14 22:33:05,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:05,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:05,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:05,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:33:05,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:33:05,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 22:33:05,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:05,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:05,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:33:05,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 22:33:05,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:33:05,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:33:05,787 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 154 proven. 70 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-14 22:33:05,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473947231] [2020-10-14 22:33:05,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:33:05,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:33:05,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53222779] [2020-10-14 22:33:05,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:33:05,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:33:05,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:33:05,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:33:05,790 INFO L87 Difference]: Start difference. First operand 14609 states and 17379 transitions. Second operand 7 states. [2020-10-14 22:33:25,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:33:25,718 INFO L93 Difference]: Finished difference Result 30707 states and 36746 transitions. [2020-10-14 22:33:25,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:33:25,720 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 296 [2020-10-14 22:33:25,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:33:25,792 INFO L225 Difference]: With dead ends: 30707 [2020-10-14 22:33:25,793 INFO L226 Difference]: Without dead ends: 16548 [2020-10-14 22:33:25,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:33:25,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16548 states. [2020-10-14 22:33:26,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16548 to 16477. [2020-10-14 22:33:26,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16477 states. [2020-10-14 22:33:26,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16477 states to 16477 states and 19575 transitions. [2020-10-14 22:33:26,326 INFO L78 Accepts]: Start accepts. Automaton has 16477 states and 19575 transitions. Word has length 296 [2020-10-14 22:33:26,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:33:26,326 INFO L479 AbstractCegarLoop]: Abstraction has 16477 states and 19575 transitions. [2020-10-14 22:33:26,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:33:26,327 INFO L276 IsEmpty]: Start isEmpty. Operand 16477 states and 19575 transitions. [2020-10-14 22:33:26,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-10-14 22:33:26,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:33:26,334 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:33:26,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 22:33:26,335 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:33:26,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:33:26,335 INFO L82 PathProgramCache]: Analyzing trace with hash 772592676, now seen corresponding path program 1 times [2020-10-14 22:33:26,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:33:26,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799434449] [2020-10-14 22:33:26,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:33:26,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:26,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:26,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:27,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:30,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:31,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:31,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-10-14 22:33:31,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:33:31,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 22:33:31,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:31,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:31,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:33:31,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:33:31,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-14 22:33:31,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:33:31,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:33:31,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:31,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:31,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:31,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:33:31,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:33:31,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:33:31,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:31,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:31,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:33:31,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:33:31,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:33:31,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:33:31,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:33:31,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:31,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:31,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:31,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:33:31,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:33:31,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-14 22:33:31,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:31,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:31,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:33:31,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:33:31,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:33:31,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:33:31,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:33:31,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:31,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:32,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:32,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 22:33:32,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:33:32,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-14 22:33:32,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:32,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:32,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:33:32,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:33:32,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 22:33:32,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:33:32,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-10-14 22:33:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:32,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:32,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:32,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:33:32,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:33:32,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 22:33:32,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:32,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:32,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:33:32,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 22:33:32,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:33:32,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:33:32,672 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 71 proven. 225 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 22:33:32,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1799434449] [2020-10-14 22:33:32,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:33:32,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 22:33:32,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44645453] [2020-10-14 22:33:32,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 22:33:32,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:33:32,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 22:33:32,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:33:32,676 INFO L87 Difference]: Start difference. First operand 16477 states and 19575 transitions. Second operand 10 states. [2020-10-14 22:33:32,881 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-10-14 22:33:33,834 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2020-10-14 22:33:34,068 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41