/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_label24.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:29:17,416 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:29:17,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:29:17,470 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:29:17,470 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:29:17,480 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:29:17,482 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:29:17,486 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:29:17,490 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:29:17,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:29:17,495 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:29:17,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:29:17,496 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:29:17,499 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:29:17,502 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:29:17,504 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:29:17,506 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:29:17,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:29:17,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:29:17,519 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:29:17,522 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:29:17,523 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:29:17,524 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:29:17,525 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:29:17,539 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:29:17,540 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:29:17,540 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:29:17,545 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:29:17,546 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:29:17,547 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:29:17,547 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:29:17,550 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:29:17,551 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:29:17,552 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:29:17,557 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:29:17,558 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:29:17,559 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:29:17,559 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:29:17,561 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:29:17,562 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:29:17,566 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:29:17,567 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 22:29:17,591 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:29:17,591 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:29:17,593 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:29:17,593 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:29:17,594 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:29:17,594 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:29:17,594 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:29:17,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:29:17,594 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:29:17,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:29:17,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:29:17,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:29:17,595 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:29:17,595 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:29:17,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:29:17,596 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:29:17,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:29:17,596 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:29:17,596 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:29:17,597 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:29:17,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:29:17,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:29:17,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:29:17,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:29:17,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:29:17,598 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:29:17,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:29:17,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:29:17,599 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:29:17,599 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 22:29:17,924 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:29:17,946 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:29:17,955 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:29:17,957 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:29:17,957 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:29:17,958 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label24.c [2020-10-14 22:29:18,036 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42c2dcb70/ef83e57ead324545be71d166a3d4e9d1/FLAGd3f02c3d0 [2020-10-14 22:29:18,821 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:29:18,822 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label24.c [2020-10-14 22:29:18,871 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42c2dcb70/ef83e57ead324545be71d166a3d4e9d1/FLAGd3f02c3d0 [2020-10-14 22:29:19,358 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42c2dcb70/ef83e57ead324545be71d166a3d4e9d1 [2020-10-14 22:29:19,370 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:29:19,373 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:29:19,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:29:19,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:29:19,382 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:29:19,383 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:29:19" (1/1) ... [2020-10-14 22:29:19,388 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49320105 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:29:19, skipping insertion in model container [2020-10-14 22:29:19,389 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:29:19" (1/1) ... [2020-10-14 22:29:19,400 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:29:19,518 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:29:20,828 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:29:20,837 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:29:21,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:29:21,403 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:29:21,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:29:21 WrapperNode [2020-10-14 22:29:21,405 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:29:21,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:29:21,407 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:29:21,407 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:29:21,425 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:29:21" (1/1) ... [2020-10-14 22:29:21,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:29:21" (1/1) ... [2020-10-14 22:29:21,492 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:29:21" (1/1) ... [2020-10-14 22:29:21,493 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:29:21" (1/1) ... [2020-10-14 22:29:21,608 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:29:21" (1/1) ... [2020-10-14 22:29:21,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:29:21" (1/1) ... [2020-10-14 22:29:21,667 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:29:21" (1/1) ... [2020-10-14 22:29:21,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:29:21,705 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:29:21,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:29:21,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:29:21,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:29:21" (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 22:29:21,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:29:21,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:29:21,794 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:29:21,794 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:29:21,794 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:29:21,794 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:29:21,795 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:29:21,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:29:21,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:29:21,796 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:29:21,796 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:29:21,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:29:21,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:29:29,183 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:29:29,184 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:29:29,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:29:29 BoogieIcfgContainer [2020-10-14 22:29:29,200 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:29:29,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:29:29,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:29:29,208 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:29:29,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:29:19" (1/3) ... [2020-10-14 22:29:29,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16728b9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:29:29, skipping insertion in model container [2020-10-14 22:29:29,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:29:21" (2/3) ... [2020-10-14 22:29:29,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16728b9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:29:29, skipping insertion in model container [2020-10-14 22:29:29,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:29:29" (3/3) ... [2020-10-14 22:29:29,218 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label24.c [2020-10-14 22:29:29,233 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:29:29,245 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:29:29,264 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:29:29,303 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:29:29,303 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:29:29,303 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:29:29,303 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:29:29,303 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:29:29,303 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:29:29,304 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:29:29,304 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:29:29,343 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 22:29:29,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 22:29:29,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:29:29,358 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:29:29,359 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:29:29,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:29:29,368 INFO L82 PathProgramCache]: Analyzing trace with hash -38263863, now seen corresponding path program 1 times [2020-10-14 22:29:29,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:29:29,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [461963957] [2020-10-14 22:29:29,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:29:29,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:29,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:30,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:30,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 22:29:30,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:30,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 634 [2020-10-14 22:29:30,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:30,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:30,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:29:30,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:29:30,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 22:29:30,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 22:29:30,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:29:30,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:30,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:30,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:30,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:29:30,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:30,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 22:29:30,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:30,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:30,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:29:30,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:29:30,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:29:30,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:30,598 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 22:29:30,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [461963957] [2020-10-14 22:29:30,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:29:30,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 22:29:30,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827397335] [2020-10-14 22:29:30,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 22:29:30,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:29:30,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 22:29:30,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 22:29:30,625 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 22:29:41,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:29:41,693 INFO L93 Difference]: Finished difference Result 1692 states and 3091 transitions. [2020-10-14 22:29:41,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:29:41,696 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-10-14 22:29:41,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:29:41,725 INFO L225 Difference]: With dead ends: 1692 [2020-10-14 22:29:41,726 INFO L226 Difference]: Without dead ends: 1012 [2020-10-14 22:29:41,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:29:41,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-10-14 22:29:41,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1002. [2020-10-14 22:29:41,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2020-10-14 22:29:41,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1542 transitions. [2020-10-14 22:29:41,874 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1542 transitions. Word has length 66 [2020-10-14 22:29:41,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:29:41,875 INFO L479 AbstractCegarLoop]: Abstraction has 1002 states and 1542 transitions. [2020-10-14 22:29:41,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 22:29:41,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1542 transitions. [2020-10-14 22:29:41,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-14 22:29:41,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:29:41,884 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:29:41,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:29:41,885 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:29:41,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:29:41,886 INFO L82 PathProgramCache]: Analyzing trace with hash -754395436, now seen corresponding path program 1 times [2020-10-14 22:29:41,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:29:41,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543475566] [2020-10-14 22:29:41,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:29:41,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:41,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:42,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:42,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:44,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:45,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:45,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-14 22:29:45,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:29:45,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3147 [2020-10-14 22:29:45,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:45,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:45,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:29:45,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:29:45,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-14 22:29:45,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:29:45,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:29:45,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:45,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:45,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:45,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:29:45,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:45,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 22:29:45,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:45,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:45,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:29:45,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:29:45,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:29:45,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:29:45,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:29:45,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:45,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:45,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:45,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:45,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:29:45,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:29:45,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-14 22:29:45,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:45,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:45,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:29:45,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:29:45,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:29:45,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:29:45,617 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 22:29:45,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543475566] [2020-10-14 22:29:45,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:29:45,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:29:45,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891374424] [2020-10-14 22:29:45,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 22:29:45,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:29:45,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 22:29:45,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:29:45,624 INFO L87 Difference]: Start difference. First operand 1002 states and 1542 transitions. Second operand 6 states. [2020-10-14 22:29:58,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:29:58,515 INFO L93 Difference]: Finished difference Result 2459 states and 3671 transitions. [2020-10-14 22:29:58,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 22:29:58,517 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 137 [2020-10-14 22:29:58,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:29:58,526 INFO L225 Difference]: With dead ends: 2459 [2020-10-14 22:29:58,527 INFO L226 Difference]: Without dead ends: 1463 [2020-10-14 22:29:58,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:29:58,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2020-10-14 22:29:58,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1463. [2020-10-14 22:29:58,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1463 states. [2020-10-14 22:29:58,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1463 states to 1463 states and 2035 transitions. [2020-10-14 22:29:58,601 INFO L78 Accepts]: Start accepts. Automaton has 1463 states and 2035 transitions. Word has length 137 [2020-10-14 22:29:58,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:29:58,604 INFO L479 AbstractCegarLoop]: Abstraction has 1463 states and 2035 transitions. [2020-10-14 22:29:58,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 22:29:58,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1463 states and 2035 transitions. [2020-10-14 22:29:58,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-14 22:29:58,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:29:58,618 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 22:29:58,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:29:58,621 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:29:58,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:29:58,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1967434272, now seen corresponding path program 1 times [2020-10-14 22:29:58,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:29:58,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [883468443] [2020-10-14 22:29:58,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:29:58,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:58,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:58,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:59,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:02,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:02,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 22:30:02,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:30:02,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4092 [2020-10-14 22:30:02,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:02,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:02,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:30:02,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:30:02,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 22:30:02,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:02,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:30:02,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:02,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:02,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:02,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:30:02,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:02,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 22:30:02,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:02,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:02,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:30:02,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:30:02,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:30:02,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:02,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:30:02,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:02,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:03,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:03,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:30:03,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:03,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-14 22:30:03,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:03,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:03,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:30:03,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:30:03,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 22:30:03,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:30:03,468 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-10-14 22:30:03,668 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 34 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:30:03,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [883468443] [2020-10-14 22:30:03,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:30:03,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:30:03,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858497861] [2020-10-14 22:30:03,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:30:03,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:30:03,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:30:03,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:30:03,672 INFO L87 Difference]: Start difference. First operand 1463 states and 2035 transitions. Second operand 8 states. [2020-10-14 22:30:23,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:30:23,514 INFO L93 Difference]: Finished difference Result 3062 states and 4639 transitions. [2020-10-14 22:30:23,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 22:30:23,518 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 140 [2020-10-14 22:30:23,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:30:23,535 INFO L225 Difference]: With dead ends: 3062 [2020-10-14 22:30:23,536 INFO L226 Difference]: Without dead ends: 1985 [2020-10-14 22:30:23,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-14 22:30:23,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2020-10-14 22:30:23,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1932. [2020-10-14 22:30:23,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1932 states. [2020-10-14 22:30:23,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 2785 transitions. [2020-10-14 22:30:23,619 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 2785 transitions. Word has length 140 [2020-10-14 22:30:23,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:30:23,620 INFO L479 AbstractCegarLoop]: Abstraction has 1932 states and 2785 transitions. [2020-10-14 22:30:23,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:30:23,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 2785 transitions. [2020-10-14 22:30:23,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-14 22:30:23,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:30:23,624 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:30:23,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:30:23,625 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:30:23,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:30:23,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1215266612, now seen corresponding path program 1 times [2020-10-14 22:30:23,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:30:23,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1664117021] [2020-10-14 22:30:23,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:30:23,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:23,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:24,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:24,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 22:30:24,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:24,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 426 [2020-10-14 22:30:24,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:24,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:24,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:30:24,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:30:24,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 22:30:24,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:24,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:30:24,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:24,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:24,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:24,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:30:24,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:24,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:30:24,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:24,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:24,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:30:24,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:30:24,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:30:24,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:24,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:30:24,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:24,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:24,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:24,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:30:24,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:24,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 22:30:24,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:24,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:24,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:30:24,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:30:24,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:30:24,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:24,473 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:30:24,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1664117021] [2020-10-14 22:30:24,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:30:24,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 22:30:24,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752072867] [2020-10-14 22:30:24,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 22:30:24,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:30:24,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 22:30:24,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:30:24,478 INFO L87 Difference]: Start difference. First operand 1932 states and 2785 transitions. Second operand 6 states. [2020-10-14 22:30:38,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:30:38,043 INFO L93 Difference]: Finished difference Result 4773 states and 7308 transitions. [2020-10-14 22:30:38,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:30:38,046 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 153 [2020-10-14 22:30:38,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:30:38,071 INFO L225 Difference]: With dead ends: 4773 [2020-10-14 22:30:38,072 INFO L226 Difference]: Without dead ends: 3280 [2020-10-14 22:30:38,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:30:38,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3280 states. [2020-10-14 22:30:38,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3280 to 3261. [2020-10-14 22:30:38,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3261 states. [2020-10-14 22:30:38,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3261 states to 3261 states and 4907 transitions. [2020-10-14 22:30:38,209 INFO L78 Accepts]: Start accepts. Automaton has 3261 states and 4907 transitions. Word has length 153 [2020-10-14 22:30:38,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:30:38,210 INFO L479 AbstractCegarLoop]: Abstraction has 3261 states and 4907 transitions. [2020-10-14 22:30:38,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 22:30:38,211 INFO L276 IsEmpty]: Start isEmpty. Operand 3261 states and 4907 transitions. [2020-10-14 22:30:38,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-14 22:30:38,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:30:38,216 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 22:30:38,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:30:38,217 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:30:38,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:30:38,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1038047871, now seen corresponding path program 1 times [2020-10-14 22:30:38,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:30:38,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [77695854] [2020-10-14 22:30:38,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:30:38,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:38,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:38,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:40,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:41,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:43,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:43,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 22:30:43,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:30:43,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-14 22:30:43,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:43,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:43,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 22:30:43,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:30:43,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-14 22:30:43,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:43,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:30:43,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:43,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:43,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:43,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:30:43,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:43,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 22:30:43,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:43,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:43,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:30:43,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:30:43,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:30:43,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:43,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:30:43,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:43,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:43,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:43,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:30:43,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:43,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-14 22:30:43,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:43,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:43,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:30:43,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:30:43,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:30:43,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:43,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:30:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:43,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:44,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:44,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:44,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:30:44,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:30:44,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-14 22:30:44,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:44,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:44,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:30:44,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:30:44,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:30:44,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:44,354 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 6 proven. 114 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-14 22:30:44,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [77695854] [2020-10-14 22:30:44,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:30:44,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:30:44,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695413024] [2020-10-14 22:30:44,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 22:30:44,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:30:44,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 22:30:44,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-14 22:30:44,359 INFO L87 Difference]: Start difference. First operand 3261 states and 4907 transitions. Second operand 9 states. [2020-10-14 22:31:23,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:31:23,129 INFO L93 Difference]: Finished difference Result 10383 states and 17299 transitions. [2020-10-14 22:31:23,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 22:31:23,132 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 228 [2020-10-14 22:31:23,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:31:23,217 INFO L225 Difference]: With dead ends: 10383 [2020-10-14 22:31:23,217 INFO L226 Difference]: Without dead ends: 7561 [2020-10-14 22:31:23,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2020-10-14 22:31:23,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7561 states. [2020-10-14 22:31:23,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7561 to 6506. [2020-10-14 22:31:23,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6506 states. [2020-10-14 22:31:23,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6506 states to 6506 states and 9695 transitions. [2020-10-14 22:31:23,569 INFO L78 Accepts]: Start accepts. Automaton has 6506 states and 9695 transitions. Word has length 228 [2020-10-14 22:31:23,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:31:23,571 INFO L479 AbstractCegarLoop]: Abstraction has 6506 states and 9695 transitions. [2020-10-14 22:31:23,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 22:31:23,571 INFO L276 IsEmpty]: Start isEmpty. Operand 6506 states and 9695 transitions. [2020-10-14 22:31:23,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-14 22:31:23,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:31:23,579 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 22:31:23,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:31:23,579 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:31:23,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:31:23,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1568914877, now seen corresponding path program 1 times [2020-10-14 22:31:23,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:31:23,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311883835] [2020-10-14 22:31:23,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:31:23,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:23,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:23,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:24,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:25,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:26,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:26,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-14 22:31:26,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:31:26,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2862 [2020-10-14 22:31:26,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:26,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:26,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 22:31:26,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:31:26,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 236 [2020-10-14 22:31:26,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:31:26,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:31:26,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:26,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:26,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:26,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:31:26,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:26,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 22:31:26,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:26,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:26,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:31:26,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:31:26,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:31:26,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:31:26,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:31:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:26,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:26,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:26,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:31:26,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:26,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-14 22:31:26,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:26,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:26,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:31:26,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:31:26,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:31:26,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:31:27,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:31:27,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:27,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:27,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:27,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 22:31:27,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:27,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-14 22:31:27,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:27,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:27,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:31:27,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:31:27,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 22:31:27,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:31:27,638 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 22:31:27,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311883835] [2020-10-14 22:31:27,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:31:27,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:31:27,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072623781] [2020-10-14 22:31:27,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 22:31:27,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:31:27,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 22:31:27,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-14 22:31:27,643 INFO L87 Difference]: Start difference. First operand 6506 states and 9695 transitions. Second operand 9 states. [2020-10-14 22:31:47,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:31:47,922 INFO L93 Difference]: Finished difference Result 16710 states and 27220 transitions. [2020-10-14 22:31:47,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 22:31:47,925 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 230 [2020-10-14 22:31:47,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:31:47,996 INFO L225 Difference]: With dead ends: 16710 [2020-10-14 22:31:47,996 INFO L226 Difference]: Without dead ends: 10643 [2020-10-14 22:31:48,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-14 22:31:48,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10643 states. [2020-10-14 22:31:48,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10643 to 9426. [2020-10-14 22:31:48,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9426 states. [2020-10-14 22:31:48,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9426 states to 9426 states and 13671 transitions. [2020-10-14 22:31:48,410 INFO L78 Accepts]: Start accepts. Automaton has 9426 states and 13671 transitions. Word has length 230 [2020-10-14 22:31:48,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:31:48,411 INFO L479 AbstractCegarLoop]: Abstraction has 9426 states and 13671 transitions. [2020-10-14 22:31:48,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 22:31:48,411 INFO L276 IsEmpty]: Start isEmpty. Operand 9426 states and 13671 transitions. [2020-10-14 22:31:48,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-14 22:31:48,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:31:48,417 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:31:48,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:31:48,418 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:31:48,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:31:48,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1353819476, now seen corresponding path program 1 times [2020-10-14 22:31:48,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:31:48,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1073212286] [2020-10-14 22:31:48,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:31:48,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:48,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:48,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:48,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:53,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:53,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-14 22:31:53,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:31:53,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 22:31:53,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:53,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:53,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:31:53,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:31:53,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-14 22:31:53,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:31:53,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:31:53,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:53,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:53,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:53,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:31:53,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:53,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:31:53,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:53,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:53,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:31:53,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:31:53,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:31:53,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:31:53,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:31:53,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:53,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:53,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:53,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:31:53,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:53,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 22:31:53,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:53,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:53,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:31:53,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:31:53,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:31:53,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:31:53,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:31:53,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:53,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:53,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:53,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:53,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:31:53,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:31:53,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-14 22:31:53,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:53,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:53,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:31:53,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:31:53,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:31:53,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:31:54,063 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 22:31:54,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1073212286] [2020-10-14 22:31:54,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:31:54,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:31:54,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851376593] [2020-10-14 22:31:54,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:31:54,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:31:54,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:31:54,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:31:54,066 INFO L87 Difference]: Start difference. First operand 9426 states and 13671 transitions. Second operand 5 states. [2020-10-14 22:32:06,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:32:06,246 INFO L93 Difference]: Finished difference Result 23804 states and 35529 transitions. [2020-10-14 22:32:06,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:32:06,252 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 239 [2020-10-14 22:32:06,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:32:06,321 INFO L225 Difference]: With dead ends: 23804 [2020-10-14 22:32:06,321 INFO L226 Difference]: Without dead ends: 14826 [2020-10-14 22:32:06,344 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 22:32:06,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14826 states. [2020-10-14 22:32:06,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14826 to 13925. [2020-10-14 22:32:06,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13925 states. [2020-10-14 22:32:06,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13925 states to 13925 states and 19426 transitions. [2020-10-14 22:32:06,676 INFO L78 Accepts]: Start accepts. Automaton has 13925 states and 19426 transitions. Word has length 239 [2020-10-14 22:32:06,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:32:06,676 INFO L479 AbstractCegarLoop]: Abstraction has 13925 states and 19426 transitions. [2020-10-14 22:32:06,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:32:06,677 INFO L276 IsEmpty]: Start isEmpty. Operand 13925 states and 19426 transitions. [2020-10-14 22:32:06,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-14 22:32:06,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:32:06,686 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 22:32:06,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:32:06,687 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:32:06,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:32:06,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1192772241, now seen corresponding path program 1 times [2020-10-14 22:32:06,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:32:06,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339590941] [2020-10-14 22:32:06,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:32:06,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:06,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:06,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:07,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:07,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:09,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:11,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:11,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-14 22:32:11,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:32:11,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4561 [2020-10-14 22:32:11,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:11,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:11,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 22:32:11,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:32:11,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 318 [2020-10-14 22:32:11,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:32:11,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:32:11,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:11,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:11,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:11,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:32:11,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:32:11,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:32:11,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:11,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:11,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:32:11,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:32:11,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:32:11,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:32:11,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:32:11,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:11,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:11,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:11,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:32:11,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:32:11,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 22:32:11,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:11,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:11,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:32:11,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:32:11,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:32:11,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:32:11,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:32:11,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:11,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:11,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:11,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:32:11,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:32:11,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 22:32:11,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:11,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:11,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:32:11,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:32:11,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 22:32:11,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:32:11,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:32:11,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:11,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:11,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:11,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:32:11,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:32:11,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 22:32:11,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:11,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:11,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:32:11,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:32:11,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:32:11,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:32:12,063 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 75 proven. 251 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-14 22:32:12,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339590941] [2020-10-14 22:32:12,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:32:12,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:32:12,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744451023] [2020-10-14 22:32:12,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 22:32:12,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:32:12,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 22:32:12,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-14 22:32:12,067 INFO L87 Difference]: Start difference. First operand 13925 states and 19426 transitions. Second operand 9 states. [2020-10-14 22:32:39,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:32:39,633 INFO L93 Difference]: Finished difference Result 38230 states and 57887 transitions. [2020-10-14 22:32:39,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 22:32:39,635 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 310 [2020-10-14 22:32:39,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:32:39,776 INFO L225 Difference]: With dead ends: 38230 [2020-10-14 22:32:39,776 INFO L226 Difference]: Without dead ends: 28797 [2020-10-14 22:32:39,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-10-14 22:32:39,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28797 states. [2020-10-14 22:32:40,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28797 to 25207. [2020-10-14 22:32:40,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25207 states. [2020-10-14 22:32:40,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25207 states to 25207 states and 35011 transitions. [2020-10-14 22:32:40,616 INFO L78 Accepts]: Start accepts. Automaton has 25207 states and 35011 transitions. Word has length 310 [2020-10-14 22:32:40,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:32:40,617 INFO L479 AbstractCegarLoop]: Abstraction has 25207 states and 35011 transitions. [2020-10-14 22:32:40,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 22:32:40,617 INFO L276 IsEmpty]: Start isEmpty. Operand 25207 states and 35011 transitions. [2020-10-14 22:32:40,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-14 22:32:40,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:32:40,629 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-14 22:32:40,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:32:40,629 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:32:40,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:32:40,630 INFO L82 PathProgramCache]: Analyzing trace with hash -702276471, now seen corresponding path program 1 times [2020-10-14 22:32:40,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:32:40,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146414458] [2020-10-14 22:32:40,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:32:40,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:40,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:40,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:40,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:41,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:43,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:43,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:45,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:45,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 343 [2020-10-14 22:32:45,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 22:32:45,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 22:32:45,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:45,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:45,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:32:45,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:32:45,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-10-14 22:32:45,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:32:45,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:32:45,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:45,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:45,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:45,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:32:45,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:32:45,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:32:45,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:45,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:45,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:32:45,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:32:45,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:32:45,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:32:45,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:32:45,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:45,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:45,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:45,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:45,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 22:32:45,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:32:45,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-14 22:32:45,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:45,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:45,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:32:45,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:32:45,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 22:32:45,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:32:46,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-14 22:32:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:46,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:46,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:46,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:32:46,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:32:46,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-14 22:32:46,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:46,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:46,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:32:46,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:32:46,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:32:46,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:32:46,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-14 22:32:46,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:46,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:46,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:46,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 22:32:46,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:32:46,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 22:32:46,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:46,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:46,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:32:46,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-14 22:32:46,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:32:46,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:32:46,418 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 246 proven. 138 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 22:32:46,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2146414458] [2020-10-14 22:32:46,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:32:46,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:32:46,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181659394] [2020-10-14 22:32:46,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:32:46,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:32:46,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:32:46,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:32:46,420 INFO L87 Difference]: Start difference. First operand 25207 states and 35011 transitions. Second operand 8 states. [2020-10-14 22:32:52,701 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 36