/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/Problem19_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:35:27,492 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:35:27,495 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:35:27,539 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:35:27,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:35:27,548 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:35:27,550 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:35:27,554 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:35:27,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:35:27,559 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:35:27,560 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:35:27,561 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:35:27,561 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:35:27,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:35:27,568 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:35:27,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:35:27,573 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:35:27,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:35:27,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:35:27,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:35:27,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:35:27,588 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:35:27,589 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:35:27,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:35:27,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:35:27,603 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:35:27,604 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:35:27,612 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:35:27,613 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:35:27,613 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:35:27,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:35:27,618 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:35:27,619 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:35:27,620 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:35:27,621 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:35:27,621 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:35:27,623 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:35:27,624 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:35:27,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:35:27,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:35:27,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:35:27,626 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 04:35:27,664 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:35:27,664 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:35:27,667 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:35:27,667 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:35:27,667 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:35:27,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:35:27,668 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:35:27,668 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:35:27,668 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:35:27,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:35:27,670 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:35:27,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:35:27,670 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:35:27,670 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:35:27,671 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:35:27,671 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:35:27,671 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:35:27,671 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:35:27,671 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:35:27,672 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:35:27,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:35:27,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:35:27,672 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:35:27,672 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:35:27,673 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:35:27,673 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:35:27,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:35:27,673 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:35:27,673 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:35:27,674 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 04:35:27,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:35:27,989 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:35:27,993 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:35:27,994 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:35:27,995 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:35:27,995 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label38.c [2020-10-14 04:35:28,078 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/18c3eeae9/b00723f0d8614dfe88584db91769141e/FLAG9776f4aac [2020-10-14 04:35:29,060 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:35:29,061 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label38.c [2020-10-14 04:35:29,127 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/18c3eeae9/b00723f0d8614dfe88584db91769141e/FLAG9776f4aac [2020-10-14 04:35:29,451 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/18c3eeae9/b00723f0d8614dfe88584db91769141e [2020-10-14 04:35:29,461 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:35:29,463 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:35:29,465 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:35:29,465 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:35:29,469 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:35:29,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:35:29" (1/1) ... [2020-10-14 04:35:29,473 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d1497b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:35:29, skipping insertion in model container [2020-10-14 04:35:29,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:35:29" (1/1) ... [2020-10-14 04:35:29,482 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:35:29,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:35:31,960 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:35:31,969 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:35:33,001 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:35:33,049 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:35:33,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:35:33 WrapperNode [2020-10-14 04:35:33,050 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:35:33,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:35:33,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:35:33,051 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:35:33,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:35:33" (1/1) ... [2020-10-14 04:35:33,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:35:33" (1/1) ... [2020-10-14 04:35:33,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:35:33" (1/1) ... [2020-10-14 04:35:33,143 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:35:33" (1/1) ... [2020-10-14 04:35:33,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:35:33" (1/1) ... [2020-10-14 04:35:33,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:35:33" (1/1) ... [2020-10-14 04:35:33,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:35:33" (1/1) ... [2020-10-14 04:35:33,672 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:35:33,673 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:35:33,673 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:35:33,673 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:35:33,674 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:35:33" (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 04:35:33,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:35:33,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:35:33,869 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:35:33,869 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:35:33,869 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 04:35:33,870 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 04:35:33,870 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 04:35:33,871 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 04:35:33,871 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:35:33,871 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:35:33,872 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:35:33,872 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 04:35:33,872 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 04:35:33,872 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 04:35:33,872 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 04:35:33,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:35:33,874 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:35:33,874 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:35:33,874 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:35:33,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:35:33,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:35:46,757 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:35:46,758 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:35:46,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:35:46 BoogieIcfgContainer [2020-10-14 04:35:46,777 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:35:46,778 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:35:46,778 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:35:46,782 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:35:46,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:35:29" (1/3) ... [2020-10-14 04:35:46,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4776aa3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:35:46, skipping insertion in model container [2020-10-14 04:35:46,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:35:33" (2/3) ... [2020-10-14 04:35:46,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4776aa3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:35:46, skipping insertion in model container [2020-10-14 04:35:46,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:35:46" (3/3) ... [2020-10-14 04:35:46,787 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label38.c [2020-10-14 04:35:46,799 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:35:46,810 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:35:46,829 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:35:46,864 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:35:46,864 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:35:46,864 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:35:46,864 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:35:46,865 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:35:46,865 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:35:46,865 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:35:46,865 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:35:46,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-14 04:35:46,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 04:35:46,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:35:46,928 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] [2020-10-14 04:35:46,928 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:35:46,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:35:46,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1148667028, now seen corresponding path program 1 times [2020-10-14 04:35:46,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:35:46,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448885759] [2020-10-14 04:35:46,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:35:47,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:35:47,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:35:47,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:35:47,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 04:35:47,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:35:47,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 501 [2020-10-14 04:35:47,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:35:47,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:35:47,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:35:47,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:35:47,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 04:35:47,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 04:35:47,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:35:47,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:35:47,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:35:47,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:35:47,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:35:47,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:35:47,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 04:35:47,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:35:47,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:35:47,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:35:47,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:35:47,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:35:47,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:35:47,971 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 04:35:47,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448885759] [2020-10-14 04:35:47,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:35:47,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:35:47,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61971352] [2020-10-14 04:35:47,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:35:47,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:35:47,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:35:47,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:35:48,002 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 5 states. [2020-10-14 04:36:25,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:36:25,701 INFO L93 Difference]: Finished difference Result 6572 states and 12488 transitions. [2020-10-14 04:36:25,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:36:25,704 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-14 04:36:25,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:36:25,771 INFO L225 Difference]: With dead ends: 6572 [2020-10-14 04:36:25,772 INFO L226 Difference]: Without dead ends: 4727 [2020-10-14 04:36:25,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:36:25,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4727 states. [2020-10-14 04:36:26,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4727 to 4624. [2020-10-14 04:36:26,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4624 states. [2020-10-14 04:36:26,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4624 states to 4624 states and 8165 transitions. [2020-10-14 04:36:26,092 INFO L78 Accepts]: Start accepts. Automaton has 4624 states and 8165 transitions. Word has length 65 [2020-10-14 04:36:26,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:36:26,097 INFO L479 AbstractCegarLoop]: Abstraction has 4624 states and 8165 transitions. [2020-10-14 04:36:26,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:36:26,098 INFO L276 IsEmpty]: Start isEmpty. Operand 4624 states and 8165 transitions. [2020-10-14 04:36:26,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-14 04:36:26,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:36:26,118 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, 1, 1, 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 04:36:26,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:36:26,119 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:36:26,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:36:26,120 INFO L82 PathProgramCache]: Analyzing trace with hash -817339402, now seen corresponding path program 1 times [2020-10-14 04:36:26,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:36:26,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43077157] [2020-10-14 04:36:26,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:36:26,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:36:26,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:36:26,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:36:28,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:36:28,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:36:28,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 04:36:28,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:36:28,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1953 [2020-10-14 04:36:28,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:36:28,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:36:28,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:36:28,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 04:36:28,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 04:36:28,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 04:36:28,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:36:28,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:36:28,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:36:28,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:36:28,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:36:28,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:36:28,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 04:36:28,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:36:28,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:36:28,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:36:28,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:36:28,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:36:28,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 04:36:28,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:36:28,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:36:28,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:36:28,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:36:28,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 04:36:28,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:36:28,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-14 04:36:28,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:36:28,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:36:28,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:36:28,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:36:28,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 04:36:28,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:36:28,632 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 57 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:36:28,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [43077157] [2020-10-14 04:36:28,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:36:28,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:36:28,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928117244] [2020-10-14 04:36:28,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:36:28,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:36:28,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:36:28,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:36:28,636 INFO L87 Difference]: Start difference. First operand 4624 states and 8165 transitions. Second operand 5 states. [2020-10-14 04:37:21,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:37:21,331 INFO L93 Difference]: Finished difference Result 13518 states and 24206 transitions. [2020-10-14 04:37:21,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:37:21,335 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-10-14 04:37:21,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:37:21,385 INFO L225 Difference]: With dead ends: 13518 [2020-10-14 04:37:21,385 INFO L226 Difference]: Without dead ends: 8900 [2020-10-14 04:37:21,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:37:21,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8900 states. [2020-10-14 04:37:21,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8900 to 8885. [2020-10-14 04:37:21,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8885 states. [2020-10-14 04:37:21,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8885 states to 8885 states and 15001 transitions. [2020-10-14 04:37:21,676 INFO L78 Accepts]: Start accepts. Automaton has 8885 states and 15001 transitions. Word has length 140 [2020-10-14 04:37:21,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:37:21,680 INFO L479 AbstractCegarLoop]: Abstraction has 8885 states and 15001 transitions. [2020-10-14 04:37:21,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:37:21,681 INFO L276 IsEmpty]: Start isEmpty. Operand 8885 states and 15001 transitions. [2020-10-14 04:37:21,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-14 04:37:21,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:37:21,696 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:37:21,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:37:21,697 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:37:21,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:37:21,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1161376194, now seen corresponding path program 1 times [2020-10-14 04:37:21,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:37:21,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715922417] [2020-10-14 04:37:21,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:37:21,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:37:21,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:37:22,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:37:22,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:37:23,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:37:23,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 04:37:23,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:37:23,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2123 [2020-10-14 04:37:23,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:37:23,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:37:23,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:37:23,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-14 04:37:23,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 04:37:23,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:37:24,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:37:24,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:37:24,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:37:24,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:37:24,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:37:24,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:37:24,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:37:24,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:37:24,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:37:24,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:37:24,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:37:24,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:37:24,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:37:24,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:37:24,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:37:24,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:37:24,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:37:24,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 04:37:24,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:37:24,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 04:37:24,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:37:24,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:37:24,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:37:24,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:37:24,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 04:37:24,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:37:24,314 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 57 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:37:24,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715922417] [2020-10-14 04:37:24,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:37:24,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 04:37:24,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125083733] [2020-10-14 04:37:24,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:37:24,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:37:24,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:37:24,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:37:24,318 INFO L87 Difference]: Start difference. First operand 8885 states and 15001 transitions. Second operand 6 states. [2020-10-14 04:38:40,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:38:40,798 INFO L93 Difference]: Finished difference Result 34677 states and 60599 transitions. [2020-10-14 04:38:40,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:38:40,804 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2020-10-14 04:38:40,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:38:40,988 INFO L225 Difference]: With dead ends: 34677 [2020-10-14 04:38:40,988 INFO L226 Difference]: Without dead ends: 25798 [2020-10-14 04:38:41,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:38:41,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25798 states. [2020-10-14 04:38:41,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25798 to 25780. [2020-10-14 04:38:41,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25780 states. [2020-10-14 04:38:41,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25780 states to 25780 states and 39373 transitions. [2020-10-14 04:38:41,959 INFO L78 Accepts]: Start accepts. Automaton has 25780 states and 39373 transitions. Word has length 146 [2020-10-14 04:38:41,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:38:41,961 INFO L479 AbstractCegarLoop]: Abstraction has 25780 states and 39373 transitions. [2020-10-14 04:38:41,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:38:41,961 INFO L276 IsEmpty]: Start isEmpty. Operand 25780 states and 39373 transitions. [2020-10-14 04:38:41,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-14 04:38:41,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:38:41,967 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:38:41,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:38:41,967 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:38:41,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:38:41,968 INFO L82 PathProgramCache]: Analyzing trace with hash -25805754, now seen corresponding path program 1 times [2020-10-14 04:38:41,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:38:41,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [408324328] [2020-10-14 04:38:41,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:38:42,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:38:42,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:38:42,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:38:42,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-14 04:38:42,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:38:42,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 533 [2020-10-14 04:38:42,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:38:42,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:38:42,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:38:42,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:38:42,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 04:38:42,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:38:42,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:38:42,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:38:42,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:38:42,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:38:42,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:38:42,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:38:42,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 04:38:42,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:38:42,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:38:42,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:38:42,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:38:42,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:38:42,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:38:42,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:38:42,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:38:43,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:38:43,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:38:43,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 04:38:43,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:38:43,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 388 [2020-10-14 04:38:43,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:38:43,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:38:43,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:38:43,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:38:43,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 04:38:43,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:38:43,383 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:38:43,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [408324328] [2020-10-14 04:38:43,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:38:43,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 04:38:43,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168924674] [2020-10-14 04:38:43,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:38:43,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:38:43,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:38:43,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:38:43,387 INFO L87 Difference]: Start difference. First operand 25780 states and 39373 transitions. Second operand 7 states.