/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/Problem13_label23.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:03:05,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:03:05,449 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:03:05,492 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:03:05,493 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:03:05,497 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:03:05,499 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:03:05,502 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:03:05,505 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:03:05,506 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:03:05,507 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:03:05,510 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:03:05,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:03:05,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:03:05,514 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:03:05,516 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:03:05,518 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:03:05,519 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:03:05,521 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:03:05,529 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:03:05,531 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:03:05,532 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:03:05,534 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:03:05,534 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:03:05,537 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:03:05,537 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:03:05,537 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:03:05,541 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:03:05,541 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:03:05,553 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:03:05,553 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:03:05,554 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:03:05,555 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:03:05,559 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:03:05,560 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:03:05,560 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:03:05,561 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:03:05,562 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:03:05,562 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:03:05,563 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:03:05,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:03:05,565 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 03:03:05,588 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:03:05,589 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:03:05,590 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:03:05,590 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:03:05,591 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:03:05,591 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:03:05,591 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:03:05,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:03:05,592 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:03:05,592 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:03:05,592 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:03:05,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:03:05,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:03:05,593 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:03:05,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:03:05,593 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:03:05,593 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:03:05,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:03:05,594 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:03:05,594 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:03:05,594 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:03:05,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:03:05,594 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:03:05,595 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:03:05,595 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:03:05,595 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:03:05,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:03:05,595 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:03:05,596 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:03:05,596 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 03:03:05,909 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:03:05,923 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:03:05,928 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:03:05,930 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:03:05,930 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:03:05,931 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label23.c [2020-10-14 03:03:06,007 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56ed030e1/478230327f2e490cb14a67f47e457221/FLAG286602a5b [2020-10-14 03:03:06,821 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:03:06,822 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label23.c [2020-10-14 03:03:06,861 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56ed030e1/478230327f2e490cb14a67f47e457221/FLAG286602a5b [2020-10-14 03:03:06,908 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56ed030e1/478230327f2e490cb14a67f47e457221 [2020-10-14 03:03:06,920 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:03:06,924 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:03:06,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:03:06,929 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:03:06,934 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:03:06,936 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:03:06" (1/1) ... [2020-10-14 03:03:06,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b3ac5cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:03:06, skipping insertion in model container [2020-10-14 03:03:06,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:03:06" (1/1) ... [2020-10-14 03:03:06,951 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:03:07,156 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:03:08,912 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:03:08,922 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:03:09,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:03:09,767 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:03:09,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:03:09 WrapperNode [2020-10-14 03:03:09,769 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:03:09,770 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:03:09,770 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:03:09,770 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:03:09,786 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:03:09" (1/1) ... [2020-10-14 03:03:09,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:03:09" (1/1) ... [2020-10-14 03:03:09,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:03:09" (1/1) ... [2020-10-14 03:03:09,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:03:09" (1/1) ... [2020-10-14 03:03:10,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:03:09" (1/1) ... [2020-10-14 03:03:10,062 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:03:09" (1/1) ... [2020-10-14 03:03:10,099 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:03:09" (1/1) ... [2020-10-14 03:03:10,132 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:03:10,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:03:10,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:03:10,133 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:03:10,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:03:09" (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 03:03:10,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:03:10,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:03:10,223 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:03:10,223 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:03:10,223 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 03:03:10,224 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 03:03:10,224 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:03:10,224 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:03:10,224 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:03:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 03:03:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 03:03:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:03:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:03:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:03:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:03:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:03:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:03:22,308 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:03:22,308 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:03:22,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:03:22 BoogieIcfgContainer [2020-10-14 03:03:22,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:03:22,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:03:22,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:03:22,340 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:03:22,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:03:06" (1/3) ... [2020-10-14 03:03:22,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22cb89c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:03:22, skipping insertion in model container [2020-10-14 03:03:22,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:03:09" (2/3) ... [2020-10-14 03:03:22,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22cb89c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:03:22, skipping insertion in model container [2020-10-14 03:03:22,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:03:22" (3/3) ... [2020-10-14 03:03:22,346 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label23.c [2020-10-14 03:03:22,358 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:03:22,370 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:03:22,386 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:03:22,428 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:03:22,429 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:03:22,429 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:03:22,429 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:03:22,429 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:03:22,429 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:03:22,429 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:03:22,430 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:03:22,480 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 03:03:22,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 03:03:22,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:03:22,488 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:03:22,489 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:03:22,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:03:22,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1437185016, now seen corresponding path program 1 times [2020-10-14 03:03:22,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:03:22,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550196689] [2020-10-14 03:03:22,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:03:22,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:03:22,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:22,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:03:22,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 03:03:22,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:03:22,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 326 [2020-10-14 03:03:22,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:03:22,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:03:22,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:03:22,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:03:22,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 03:03:22,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:03:23,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:03:23,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:03:23,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:23,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:03:23,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:03:23,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:03:23,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 03:03:23,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:03:23,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:03:23,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:03:23,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:03:23,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:03:23,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:03:23,111 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 03:03:23,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550196689] [2020-10-14 03:03:23,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:03:23,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 03:03:23,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685476883] [2020-10-14 03:03:23,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 03:03:23,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:03:23,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 03:03:23,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 03:03:23,144 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-14 03:03:37,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:03:37,557 INFO L93 Difference]: Finished difference Result 3243 states and 5948 transitions. [2020-10-14 03:03:37,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:03:37,560 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-14 03:03:37,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:03:37,596 INFO L225 Difference]: With dead ends: 3243 [2020-10-14 03:03:37,597 INFO L226 Difference]: Without dead ends: 2045 [2020-10-14 03:03:37,611 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 03:03:37,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2045 states. [2020-10-14 03:03:37,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2045 to 1988. [2020-10-14 03:03:37,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1988 states. [2020-10-14 03:03:37,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1988 states to 1988 states and 3533 transitions. [2020-10-14 03:03:37,791 INFO L78 Accepts]: Start accepts. Automaton has 1988 states and 3533 transitions. Word has length 19 [2020-10-14 03:03:37,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:03:37,791 INFO L479 AbstractCegarLoop]: Abstraction has 1988 states and 3533 transitions. [2020-10-14 03:03:37,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 03:03:37,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1988 states and 3533 transitions. [2020-10-14 03:03:37,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-14 03:03:37,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:03:37,796 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:03:37,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:03:37,797 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:03:37,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:03:37,798 INFO L82 PathProgramCache]: Analyzing trace with hash 173051777, now seen corresponding path program 1 times [2020-10-14 03:03:37,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:03:37,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085498869] [2020-10-14 03:03:37,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:03:37,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:03:37,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:38,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:39,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:03:39,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 03:03:39,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:03:39,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1258 [2020-10-14 03:03:39,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:03:39,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:03:39,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:03:39,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 03:03:39,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 03:03:39,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:03:39,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:03:39,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:03:39,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:39,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:03:39,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:03:39,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:03:39,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 03:03:39,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:03:39,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:03:39,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:03:39,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:03:39,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:03:39,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:03:39,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:03:39,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:03:39,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:39,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:03:39,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 03:03:39,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:03:39,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-14 03:03:39,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:03:39,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:03:39,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:03:39,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:03:39,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 03:03:39,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:03:39,383 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:03:39,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085498869] [2020-10-14 03:03:39,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:03:39,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:03:39,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859760744] [2020-10-14 03:03:39,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:03:39,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:03:39,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:03:39,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:03:39,389 INFO L87 Difference]: Start difference. First operand 1988 states and 3533 transitions. Second operand 5 states. [2020-10-14 03:03:58,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:03:58,230 INFO L93 Difference]: Finished difference Result 5701 states and 10318 transitions. [2020-10-14 03:03:58,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:03:58,232 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-10-14 03:03:58,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:03:58,259 INFO L225 Difference]: With dead ends: 5701 [2020-10-14 03:03:58,259 INFO L226 Difference]: Without dead ends: 3719 [2020-10-14 03:03:58,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:03:58,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3719 states. [2020-10-14 03:03:58,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3719 to 3646. [2020-10-14 03:03:58,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3646 states. [2020-10-14 03:03:58,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 6573 transitions. [2020-10-14 03:03:58,423 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 6573 transitions. Word has length 88 [2020-10-14 03:03:58,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:03:58,424 INFO L479 AbstractCegarLoop]: Abstraction has 3646 states and 6573 transitions. [2020-10-14 03:03:58,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:03:58,425 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 6573 transitions. [2020-10-14 03:03:58,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-14 03:03:58,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:03:58,438 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:03:58,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:03:58,440 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:03:58,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:03:58,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1541855700, now seen corresponding path program 1 times [2020-10-14 03:03:58,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:03:58,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970484355] [2020-10-14 03:03:58,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:03:58,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:03:58,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:58,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:59,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:03:59,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 03:03:59,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:03:59,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 810 [2020-10-14 03:03:59,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:03:59,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:03:59,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:03:59,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 03:03:59,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 03:03:59,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:03:59,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:03:59,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:03:59,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:59,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:03:59,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:03:59,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:03:59,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:03:59,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:03:59,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:03:59,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:03:59,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:03:59,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:03:59,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:03:59,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:03:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:03:59,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:59,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:03:59,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 03:03:59,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:03:59,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 03:03:59,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:03:59,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:03:59,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:03:59,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:03:59,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 03:03:59,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:03:59,530 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:03:59,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1970484355] [2020-10-14 03:03:59,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:03:59,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:03:59,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927697088] [2020-10-14 03:03:59,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:03:59,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:03:59,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:03:59,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:03:59,533 INFO L87 Difference]: Start difference. First operand 3646 states and 6573 transitions. Second operand 5 states. [2020-10-14 03:04:17,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:04:17,103 INFO L93 Difference]: Finished difference Result 10568 states and 19404 transitions. [2020-10-14 03:04:17,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:04:17,106 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2020-10-14 03:04:17,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:04:17,148 INFO L225 Difference]: With dead ends: 10568 [2020-10-14 03:04:17,149 INFO L226 Difference]: Without dead ends: 6928 [2020-10-14 03:04:17,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:04:17,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6928 states. [2020-10-14 03:04:17,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6928 to 6916. [2020-10-14 03:04:17,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6916 states. [2020-10-14 03:04:17,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6916 states to 6916 states and 11285 transitions. [2020-10-14 03:04:17,424 INFO L78 Accepts]: Start accepts. Automaton has 6916 states and 11285 transitions. Word has length 91 [2020-10-14 03:04:17,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:04:17,426 INFO L479 AbstractCegarLoop]: Abstraction has 6916 states and 11285 transitions. [2020-10-14 03:04:17,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:04:17,434 INFO L276 IsEmpty]: Start isEmpty. Operand 6916 states and 11285 transitions. [2020-10-14 03:04:17,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 03:04:17,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:04:17,440 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:04:17,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:04:17,440 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:04:17,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:04:17,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1135085951, now seen corresponding path program 1 times [2020-10-14 03:04:17,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:04:17,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458787550] [2020-10-14 03:04:17,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:04:17,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:04:17,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:17,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:18,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:18,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:04:18,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 03:04:18,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:04:18,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1066 [2020-10-14 03:04:18,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:04:18,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:04:18,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:04:18,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 03:04:18,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 03:04:18,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:04:18,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:04:18,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:04:18,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:18,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:04:18,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:04:18,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:04:18,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:04:18,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:04:18,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:04:18,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:04:18,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:04:18,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:04:18,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:04:18,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:04:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:04:18,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:18,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:04:18,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 03:04:18,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:04:18,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 03:04:18,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:04:18,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:04:18,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:04:18,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:04:18,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 03:04:18,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:04:18,872 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:04:18,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458787550] [2020-10-14 03:04:18,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:04:18,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:04:18,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424752388] [2020-10-14 03:04:18,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:04:18,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:04:18,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:04:18,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:04:18,875 INFO L87 Difference]: Start difference. First operand 6916 states and 11285 transitions. Second operand 5 states. [2020-10-14 03:04:43,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:04:43,578 INFO L93 Difference]: Finished difference Result 20339 states and 33971 transitions. [2020-10-14 03:04:43,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:04:43,579 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-14 03:04:43,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:04:43,648 INFO L225 Difference]: With dead ends: 20339 [2020-10-14 03:04:43,649 INFO L226 Difference]: Without dead ends: 13429 [2020-10-14 03:04:43,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:04:43,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13429 states. [2020-10-14 03:04:43,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13429 to 13419. [2020-10-14 03:04:43,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13419 states. [2020-10-14 03:04:43,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13419 states to 13419 states and 20581 transitions. [2020-10-14 03:04:43,999 INFO L78 Accepts]: Start accepts. Automaton has 13419 states and 20581 transitions. Word has length 104 [2020-10-14 03:04:44,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:04:44,001 INFO L479 AbstractCegarLoop]: Abstraction has 13419 states and 20581 transitions. [2020-10-14 03:04:44,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:04:44,001 INFO L276 IsEmpty]: Start isEmpty. Operand 13419 states and 20581 transitions. [2020-10-14 03:04:44,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-14 03:04:44,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:04:44,004 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:04:44,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:04:44,005 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:04:44,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:04:44,005 INFO L82 PathProgramCache]: Analyzing trace with hash -808157789, now seen corresponding path program 1 times [2020-10-14 03:04:44,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:04:44,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [749058237] [2020-10-14 03:04:44,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:04:44,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:04:44,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:44,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:44,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:45,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:04:45,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 03:04:45,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:04:45,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1078 [2020-10-14 03:04:45,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:04:45,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:04:45,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:04:45,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-14 03:04:45,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 03:04:45,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:04:45,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:04:45,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:04:45,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:45,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:04:45,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:04:45,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:04:45,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:04:45,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:04:45,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:04:45,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:04:45,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:04:45,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:04:45,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:04:45,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:04:45,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:04:45,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:45,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:04:45,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 03:04:45,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:04:45,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-14 03:04:45,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:04:45,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:04:45,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:04:45,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:04:45,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 03:04:45,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-14 03:04:45,528 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:04:45,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [749058237] [2020-10-14 03:04:45,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:04:45,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 03:04:45,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356680304] [2020-10-14 03:04:45,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 03:04:45,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:04:45,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 03:04:45,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:04:45,532 INFO L87 Difference]: Start difference. First operand 13419 states and 20581 transitions. Second operand 6 states. [2020-10-14 03:05:11,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:05:11,871 INFO L93 Difference]: Finished difference Result 50440 states and 81663 transitions. [2020-10-14 03:05:11,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 03:05:11,874 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2020-10-14 03:05:11,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:05:12,083 INFO L225 Difference]: With dead ends: 50440 [2020-10-14 03:05:12,084 INFO L226 Difference]: Without dead ends: 37027 [2020-10-14 03:05:12,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:05:12,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37027 states. [2020-10-14 03:05:13,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37027 to 36988. [2020-10-14 03:05:13,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36988 states. [2020-10-14 03:05:13,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36988 states to 36988 states and 54530 transitions. [2020-10-14 03:05:13,103 INFO L78 Accepts]: Start accepts. Automaton has 36988 states and 54530 transitions. Word has length 138 [2020-10-14 03:05:13,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:05:13,103 INFO L479 AbstractCegarLoop]: Abstraction has 36988 states and 54530 transitions. [2020-10-14 03:05:13,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 03:05:13,103 INFO L276 IsEmpty]: Start isEmpty. Operand 36988 states and 54530 transitions. [2020-10-14 03:05:13,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-14 03:05:13,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:05:13,116 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:05:13,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:05:13,116 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:05:13,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:05:13,117 INFO L82 PathProgramCache]: Analyzing trace with hash 334559531, now seen corresponding path program 1 times [2020-10-14 03:05:13,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:05:13,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086709661] [2020-10-14 03:05:13,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:05:13,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:05:13,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:13,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:14,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:16,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:18,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:05:18,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-14 03:05:18,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:05:18,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 03:05:18,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:05:18,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:05:18,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:05:18,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 03:05:18,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-14 03:05:18,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:05:18,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:05:18,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:05:18,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:18,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:05:18,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:05:18,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:05:18,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:05:18,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:05:18,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:05:18,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:05:18,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:05:18,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:05:18,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:05:18,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:05:18,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:05:18,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:18,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:05:18,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 03:05:18,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:05:18,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-14 03:05:18,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:05:18,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:05:18,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:05:18,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:05:18,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 03:05:18,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:05:18,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 03:05:18,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:05:18,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:18,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:05:18,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-14 03:05:18,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:05:18,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-10-14 03:05:18,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:05:18,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:05:18,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:05:18,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:05:18,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-14 03:05:18,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:05:19,139 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:05:19,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086709661] [2020-10-14 03:05:19,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:05:19,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:05:19,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063728202] [2020-10-14 03:05:19,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:05:19,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:05:19,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:05:19,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:05:19,143 INFO L87 Difference]: Start difference. First operand 36988 states and 54530 transitions. Second operand 7 states. [2020-10-14 03:06:01,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:06:01,555 INFO L93 Difference]: Finished difference Result 127806 states and 210858 transitions. [2020-10-14 03:06:01,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:06:01,558 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 249 [2020-10-14 03:06:01,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:06:01,994 INFO L225 Difference]: With dead ends: 127806 [2020-10-14 03:06:01,994 INFO L226 Difference]: Without dead ends: 90824 [2020-10-14 03:06:02,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:06:02,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90824 states. [2020-10-14 03:06:05,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90824 to 90462. [2020-10-14 03:06:05,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90462 states. [2020-10-14 03:06:05,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90462 states to 90462 states and 133356 transitions. [2020-10-14 03:06:05,777 INFO L78 Accepts]: Start accepts. Automaton has 90462 states and 133356 transitions. Word has length 249 [2020-10-14 03:06:05,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:06:05,778 INFO L479 AbstractCegarLoop]: Abstraction has 90462 states and 133356 transitions. [2020-10-14 03:06:05,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:06:05,778 INFO L276 IsEmpty]: Start isEmpty. Operand 90462 states and 133356 transitions. [2020-10-14 03:06:05,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-10-14 03:06:05,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:06:05,795 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:06:05,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:06:05,795 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:06:05,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:06:05,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1627874670, now seen corresponding path program 1 times [2020-10-14 03:06:05,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:06:05,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590163481] [2020-10-14 03:06:05,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:06:05,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:06:05,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:06,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:06,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:09,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:10,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:06:10,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 03:06:10,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:06:10,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 03:06:10,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:06:10,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:06:10,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:06:10,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-14 03:06:10,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-14 03:06:10,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:06:10,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:06:10,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:06:10,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:10,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:06:10,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:06:10,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:06:10,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:06:10,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:06:10,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:06:10,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:06:10,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:06:10,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:06:10,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:06:11,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:06:11,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:06:11,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:11,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:06:11,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 03:06:11,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:06:11,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 03:06:11,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:06:11,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:06:11,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:06:11,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:06:11,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 03:06:11,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:06:11,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 03:06:11,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:06:11,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:11,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:06:11,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-14 03:06:11,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:06:11,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-14 03:06:11,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:06:11,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:06:11,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:06:11,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:06:11,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-14 03:06:11,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:06:11,596 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:06:11,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590163481] [2020-10-14 03:06:11,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:06:11,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:06:11,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867826601] [2020-10-14 03:06:11,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:06:11,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:06:11,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:06:11,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:06:11,599 INFO L87 Difference]: Start difference. First operand 90462 states and 133356 transitions. Second operand 7 states. [2020-10-14 03:06:36,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:06:36,926 INFO L93 Difference]: Finished difference Result 181156 states and 280588 transitions. [2020-10-14 03:06:36,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:06:36,930 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 263 [2020-10-14 03:06:36,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:06:39,646 INFO L225 Difference]: With dead ends: 181156 [2020-10-14 03:06:39,647 INFO L226 Difference]: Without dead ends: 90700 [2020-10-14 03:06:39,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:06:39,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90700 states. [2020-10-14 03:06:41,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90700 to 90439. [2020-10-14 03:06:41,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90439 states. [2020-10-14 03:06:41,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90439 states to 90439 states and 123491 transitions. [2020-10-14 03:06:41,725 INFO L78 Accepts]: Start accepts. Automaton has 90439 states and 123491 transitions. Word has length 263 [2020-10-14 03:06:41,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:06:41,725 INFO L479 AbstractCegarLoop]: Abstraction has 90439 states and 123491 transitions. [2020-10-14 03:06:41,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:06:41,726 INFO L276 IsEmpty]: Start isEmpty. Operand 90439 states and 123491 transitions. [2020-10-14 03:06:41,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-14 03:06:41,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:06:41,742 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:06:41,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:06:41,742 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:06:41,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:06:41,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1197411693, now seen corresponding path program 1 times [2020-10-14 03:06:41,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:06:41,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479756534] [2020-10-14 03:06:41,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:06:41,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:06:41,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:41,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:42,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:44,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:46,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:06:46,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-14 03:06:46,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:06:46,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-14 03:06:46,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:06:46,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:06:46,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:06:46,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-14 03:06:46,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-14 03:06:46,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:06:46,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:06:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:06:46,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:46,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:06:46,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:06:46,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:06:46,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:06:46,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:06:46,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:06:46,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:06:46,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:06:46,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:06:46,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:06:46,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:06:47,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:06:47,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:47,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:06:47,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 03:06:47,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:06:47,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 03:06:47,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:06:47,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:06:47,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:06:47,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:06:47,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 03:06:47,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:06:47,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 03:06:47,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:06:47,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:47,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:06:47,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 03:06:47,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:06:47,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-14 03:06:47,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:06:47,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:06:47,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:06:47,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:06:47,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-14 03:06:47,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:06:47,659 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 114 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:06:47,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479756534] [2020-10-14 03:06:47,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:06:47,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:06:47,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022465824] [2020-10-14 03:06:47,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:06:47,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:06:47,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:06:47,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:06:47,663 INFO L87 Difference]: Start difference. First operand 90439 states and 123491 transitions. Second operand 7 states.