/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:01:15,533 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:01:15,535 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:01:15,559 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:01:15,560 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:01:15,561 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:01:15,562 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:01:15,564 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:01:15,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:01:15,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:01:15,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:01:15,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:01:15,569 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:01:15,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:01:15,570 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:01:15,572 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:01:15,572 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:01:15,573 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:01:15,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:01:15,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:01:15,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:01:15,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:01:15,580 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:01:15,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:01:15,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:01:15,584 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:01:15,584 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:01:15,585 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:01:15,586 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:01:15,587 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:01:15,587 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:01:15,588 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:01:15,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:01:15,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:01:15,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:01:15,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:01:15,591 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:01:15,591 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:01:15,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:01:15,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:01:15,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:01:15,594 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 23:01:15,626 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:01:15,627 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:01:15,628 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:01:15,628 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:01:15,628 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:01:15,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:01:15,629 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:01:15,629 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:01:15,630 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:01:15,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:01:15,630 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:01:15,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:01:15,630 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:01:15,631 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:01:15,631 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:01:15,631 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:01:15,631 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:01:15,631 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:01:15,632 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:01:15,632 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:01:15,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:01:15,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:01:15,633 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:01:15,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:01:15,634 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:01:15,634 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:01:15,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:01:15,634 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:01:15,635 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:01:15,635 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:01:15,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:01:15,952 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:01:15,957 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:01:15,958 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:01:15,959 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:01:15,960 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label19.c [2020-10-14 23:01:16,020 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6498be937/33f6b2def8cc409bbd0d3d7a8f10d49c/FLAG62ce8c935 [2020-10-14 23:01:16,835 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:01:16,836 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label19.c [2020-10-14 23:01:16,898 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6498be937/33f6b2def8cc409bbd0d3d7a8f10d49c/FLAG62ce8c935 [2020-10-14 23:01:17,309 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6498be937/33f6b2def8cc409bbd0d3d7a8f10d49c [2020-10-14 23:01:17,320 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:01:17,323 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:01:17,325 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:01:17,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:01:17,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:01:17,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:01:17" (1/1) ... [2020-10-14 23:01:17,334 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12868582 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:01:17, skipping insertion in model container [2020-10-14 23:01:17,334 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:01:17" (1/1) ... [2020-10-14 23:01:17,342 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:01:17,609 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:01:20,129 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:01:20,134 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:01:21,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:01:21,234 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:01:21,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:01:21 WrapperNode [2020-10-14 23:01:21,235 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:01:21,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:01:21,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:01:21,236 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:01:21,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:01:21" (1/1) ... [2020-10-14 23:01:21,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:01:21" (1/1) ... [2020-10-14 23:01:21,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:01:21" (1/1) ... [2020-10-14 23:01:21,322 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:01:21" (1/1) ... [2020-10-14 23:01:21,488 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:01:21" (1/1) ... [2020-10-14 23:01:21,691 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:01:21" (1/1) ... [2020-10-14 23:01:21,752 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:01:21" (1/1) ... [2020-10-14 23:01:21,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:01:21,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:01:21,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:01:21,842 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:01:21,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:01:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:01:21,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:01:21,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:01:21,907 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 23:01:21,908 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 23:01:21,908 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 23:01:21,908 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 23:01:21,908 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 23:01:21,908 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 23:01:21,909 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:01:21,909 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 23:01:21,909 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 23:01:21,909 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 23:01:21,909 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 23:01:21,909 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 23:01:21,910 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 23:01:21,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:01:21,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:01:21,910 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:01:21,910 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:01:21,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:01:21,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:01:34,153 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:01:34,153 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 23:01:34,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:01:34 BoogieIcfgContainer [2020-10-14 23:01:34,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:01:34,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:01:34,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:01:34,175 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:01:34,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:01:17" (1/3) ... [2020-10-14 23:01:34,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dcc1de9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:01:34, skipping insertion in model container [2020-10-14 23:01:34,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:01:21" (2/3) ... [2020-10-14 23:01:34,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dcc1de9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:01:34, skipping insertion in model container [2020-10-14 23:01:34,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:01:34" (3/3) ... [2020-10-14 23:01:34,179 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label19.c [2020-10-14 23:01:34,189 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:01:34,199 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:01:34,214 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:01:34,248 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:01:34,248 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:01:34,248 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:01:34,249 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:01:34,249 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:01:34,249 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:01:34,249 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:01:34,249 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:01:34,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-14 23:01:34,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 23:01:34,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:01:34,302 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] [2020-10-14 23:01:34,303 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:01:34,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:01:34,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1392046818, now seen corresponding path program 1 times [2020-10-14 23:01:34,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:01:34,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1279700058] [2020-10-14 23:01:34,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:01:34,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:01:34,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:01:34,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:01:34,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 23:01:34,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:01:34,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 395 [2020-10-14 23:01:34,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:01:34,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:01:34,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:01:34,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:01:34,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 23:01:34,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:01:35,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:01:35,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:01:35,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:01:35,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:01:35,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:01:35,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:01:35,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 23:01:35,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:01:35,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:01:35,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:01:35,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:01:35,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:01:35,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:01:35,087 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 23:01:35,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1279700058] [2020-10-14 23:01:35,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:01:35,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:01:35,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491116883] [2020-10-14 23:01:35,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:01:35,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:01:35,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:01:35,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:01:35,126 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2020-10-14 23:01:57,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:01:57,978 INFO L93 Difference]: Finished difference Result 5086 states and 9561 transitions. [2020-10-14 23:01:57,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 23:01:57,980 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-14 23:01:57,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:01:58,033 INFO L225 Difference]: With dead ends: 5086 [2020-10-14 23:01:58,033 INFO L226 Difference]: Without dead ends: 3245 [2020-10-14 23:01:58,050 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 23:01:58,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3245 states. [2020-10-14 23:01:58,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3245 to 3178. [2020-10-14 23:01:58,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3178 states. [2020-10-14 23:01:58,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3178 states to 3178 states and 5849 transitions. [2020-10-14 23:01:58,254 INFO L78 Accepts]: Start accepts. Automaton has 3178 states and 5849 transitions. Word has length 30 [2020-10-14 23:01:58,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:01:58,255 INFO L479 AbstractCegarLoop]: Abstraction has 3178 states and 5849 transitions. [2020-10-14 23:01:58,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:01:58,255 INFO L276 IsEmpty]: Start isEmpty. Operand 3178 states and 5849 transitions. [2020-10-14 23:01:58,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-14 23:01:58,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:01:58,261 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:01:58,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:01:58,261 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:01:58,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:01:58,262 INFO L82 PathProgramCache]: Analyzing trace with hash 553086255, now seen corresponding path program 1 times [2020-10-14 23:01:58,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:01:58,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351382763] [2020-10-14 23:01:58,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:01:58,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:01:58,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:01:58,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:01:58,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:01:58,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:01:59,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:01:59,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 23:01:59,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:01:59,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1347 [2020-10-14 23:01:59,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:01:59,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:01:59,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:01:59,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:01:59,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 23:01:59,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:01:59,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:01:59,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:01:59,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:01:59,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:01:59,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:01:59,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:01:59,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:01:59,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:01:59,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:01:59,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:01:59,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:01:59,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:01:59,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:01:59,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:01:59,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:01:59,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:01:59,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:01:59,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:01:59,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 23:01:59,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:01:59,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-14 23:01:59,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:01:59,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:01:59,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:01:59,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:01:59,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 23:01:59,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:02:00,067 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:02:00,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351382763] [2020-10-14 23:02:00,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:02:00,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:02:00,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292672070] [2020-10-14 23:02:00,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:02:00,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:02:00,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:02:00,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:02:00,072 INFO L87 Difference]: Start difference. First operand 3178 states and 5849 transitions. Second operand 7 states. [2020-10-14 23:02:35,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:02:35,183 INFO L93 Difference]: Finished difference Result 9520 states and 17578 transitions. [2020-10-14 23:02:35,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:02:35,187 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 101 [2020-10-14 23:02:35,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:02:35,220 INFO L225 Difference]: With dead ends: 9520 [2020-10-14 23:02:35,221 INFO L226 Difference]: Without dead ends: 6348 [2020-10-14 23:02:35,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:02:35,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6348 states. [2020-10-14 23:02:35,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6348 to 6239. [2020-10-14 23:02:35,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6239 states. [2020-10-14 23:02:35,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6239 states to 6239 states and 9741 transitions. [2020-10-14 23:02:35,401 INFO L78 Accepts]: Start accepts. Automaton has 6239 states and 9741 transitions. Word has length 101 [2020-10-14 23:02:35,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:02:35,402 INFO L479 AbstractCegarLoop]: Abstraction has 6239 states and 9741 transitions. [2020-10-14 23:02:35,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:02:35,402 INFO L276 IsEmpty]: Start isEmpty. Operand 6239 states and 9741 transitions. [2020-10-14 23:02:35,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-14 23:02:35,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:02:35,404 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:02:35,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:02:35,405 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:02:35,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:02:35,405 INFO L82 PathProgramCache]: Analyzing trace with hash -436665375, now seen corresponding path program 1 times [2020-10-14 23:02:35,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:02:35,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043719032] [2020-10-14 23:02:35,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:02:35,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:02:35,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:02:35,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:02:36,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:02:36,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 23:02:36,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:02:36,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 626 [2020-10-14 23:02:36,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:02:36,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:02:36,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:02:36,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:02:36,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 23:02:36,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:02:36,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:02:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:02:36,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:02:36,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:02:36,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:02:36,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:02:36,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:02:36,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:02:36,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:02:36,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:02:36,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:02:36,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:02:36,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:02:36,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:02:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:02:36,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:02:36,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:02:36,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 23:02:36,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:02:36,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 23:02:36,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:02:36,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:02:36,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:02:36,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:02:36,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 23:02:36,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:02:36,351 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:02:36,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1043719032] [2020-10-14 23:02:36,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:02:36,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:02:36,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573914281] [2020-10-14 23:02:36,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:02:36,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:02:36,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:02:36,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:02:36,354 INFO L87 Difference]: Start difference. First operand 6239 states and 9741 transitions. Second operand 7 states. [2020-10-14 23:03:12,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:03:12,514 INFO L93 Difference]: Finished difference Result 15806 states and 24805 transitions. [2020-10-14 23:03:12,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:03:12,516 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-10-14 23:03:12,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:03:12,569 INFO L225 Difference]: With dead ends: 15806 [2020-10-14 23:03:12,569 INFO L226 Difference]: Without dead ends: 9573 [2020-10-14 23:03:12,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:03:12,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9573 states. [2020-10-14 23:03:12,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9573 to 9326. [2020-10-14 23:03:12,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9326 states. [2020-10-14 23:03:12,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9326 states to 9326 states and 13680 transitions. [2020-10-14 23:03:12,946 INFO L78 Accepts]: Start accepts. Automaton has 9326 states and 13680 transitions. Word has length 108 [2020-10-14 23:03:12,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:03:12,947 INFO L479 AbstractCegarLoop]: Abstraction has 9326 states and 13680 transitions. [2020-10-14 23:03:12,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:03:12,947 INFO L276 IsEmpty]: Start isEmpty. Operand 9326 states and 13680 transitions. [2020-10-14 23:03:12,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-14 23:03:12,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:03:12,961 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:03:12,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:03:12,962 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:03:12,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:03:12,962 INFO L82 PathProgramCache]: Analyzing trace with hash -48124653, now seen corresponding path program 1 times [2020-10-14 23:03:12,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:03:12,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714777401] [2020-10-14 23:03:12,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:03:13,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:03:13,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:13,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:13,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:13,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:14,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:03:14,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 23:03:14,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:03:14,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1377 [2020-10-14 23:03:14,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:03:14,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:03:14,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:03:14,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:03:14,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 23:03:14,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:03:14,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:03:14,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:03:14,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:14,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:03:14,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:03:14,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:03:14,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:03:14,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:03:14,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:03:14,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:03:14,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:03:14,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:03:14,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:03:14,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:03:14,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:03:14,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:14,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:14,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:03:14,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 23:03:14,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:03:14,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-10-14 23:03:14,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:03:14,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:03:14,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:03:14,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:03:14,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 23:03:14,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:03:14,931 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:03:14,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714777401] [2020-10-14 23:03:14,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:03:14,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 23:03:14,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884838678] [2020-10-14 23:03:14,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:03:14,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:03:14,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:03:14,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:03:14,934 INFO L87 Difference]: Start difference. First operand 9326 states and 13680 transitions. Second operand 6 states. [2020-10-14 23:03:59,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:03:59,710 INFO L93 Difference]: Finished difference Result 27784 states and 42076 transitions. [2020-10-14 23:03:59,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:03:59,716 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2020-10-14 23:03:59,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:03:59,790 INFO L225 Difference]: With dead ends: 27784 [2020-10-14 23:03:59,791 INFO L226 Difference]: Without dead ends: 18464 [2020-10-14 23:03:59,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:03:59,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18464 states. [2020-10-14 23:04:00,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18464 to 18290. [2020-10-14 23:04:00,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18290 states. [2020-10-14 23:04:00,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18290 states to 18290 states and 25333 transitions. [2020-10-14 23:04:00,334 INFO L78 Accepts]: Start accepts. Automaton has 18290 states and 25333 transitions. Word has length 116 [2020-10-14 23:04:00,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:04:00,335 INFO L479 AbstractCegarLoop]: Abstraction has 18290 states and 25333 transitions. [2020-10-14 23:04:00,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:04:00,335 INFO L276 IsEmpty]: Start isEmpty. Operand 18290 states and 25333 transitions. [2020-10-14 23:04:00,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-14 23:04:00,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:04:00,341 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:04:00,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:04:00,341 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:04:00,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:04:00,342 INFO L82 PathProgramCache]: Analyzing trace with hash 394074117, now seen corresponding path program 1 times [2020-10-14 23:04:00,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:04:00,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020340161] [2020-10-14 23:04:00,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:04:00,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:04:00,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:04:00,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:04:01,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:04:01,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-14 23:04:01,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:04:01,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1207 [2020-10-14 23:04:01,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:04:01,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:04:01,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:04:01,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:04:01,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-14 23:04:01,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:04:01,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:04:01,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:04:01,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:04:01,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:04:01,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:04:01,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:04:01,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 23:04:01,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:04:01,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:04:01,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:04:01,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:04:01,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:04:01,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:04:01,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:04:01,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:04:01,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:04:02,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:04:02,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 23:04:02,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:04:02,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-14 23:04:02,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:04:02,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:04:02,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:04:02,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:04:02,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-14 23:04:02,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:04:02,227 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:04:02,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020340161] [2020-10-14 23:04:02,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:04:02,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:04:02,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376806993] [2020-10-14 23:04:02,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:04:02,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:04:02,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:04:02,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:04:02,233 INFO L87 Difference]: Start difference. First operand 18290 states and 25333 transitions. Second operand 7 states. [2020-10-14 23:05:01,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:05:02,000 INFO L93 Difference]: Finished difference Result 45643 states and 63407 transitions. [2020-10-14 23:05:02,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:05:02,005 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 172 [2020-10-14 23:05:02,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:05:02,089 INFO L225 Difference]: With dead ends: 45643 [2020-10-14 23:05:02,090 INFO L226 Difference]: Without dead ends: 27359 [2020-10-14 23:05:02,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:05:02,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27359 states. [2020-10-14 23:05:02,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27359 to 27247. [2020-10-14 23:05:02,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27247 states. [2020-10-14 23:05:02,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27247 states to 27247 states and 36538 transitions. [2020-10-14 23:05:02,721 INFO L78 Accepts]: Start accepts. Automaton has 27247 states and 36538 transitions. Word has length 172 [2020-10-14 23:05:02,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:05:02,723 INFO L479 AbstractCegarLoop]: Abstraction has 27247 states and 36538 transitions. [2020-10-14 23:05:02,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:05:02,723 INFO L276 IsEmpty]: Start isEmpty. Operand 27247 states and 36538 transitions. [2020-10-14 23:05:02,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-14 23:05:02,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:05:02,727 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:05:02,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:05:02,727 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:05:02,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:05:02,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1863841046, now seen corresponding path program 1 times [2020-10-14 23:05:02,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:05:02,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108901400] [2020-10-14 23:05:02,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:05:02,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:05:02,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:05:03,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:05:03,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:05:03,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-14 23:05:03,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:05:03,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1070 [2020-10-14 23:05:03,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:05:03,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:05:03,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:05:03,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:05:03,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-14 23:05:03,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:05:03,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:05:03,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:05:03,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:05:03,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:05:03,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:05:03,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:05:03,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:05:03,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:05:03,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:05:03,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:05:03,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:05:03,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:05:03,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:05:04,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:05:04,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:05:04,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:05:04,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:05:04,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 23:05:04,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:05:04,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-14 23:05:04,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:05:04,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:05:04,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:05:04,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:05:04,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-14 23:05:04,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:05:04,469 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:05:04,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108901400] [2020-10-14 23:05:04,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:05:04,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:05:04,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525798135] [2020-10-14 23:05:04,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:05:04,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:05:04,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:05:04,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:05:04,473 INFO L87 Difference]: Start difference. First operand 27247 states and 36538 transitions. Second operand 7 states.