/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 SingleStatement --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=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:08:59,504 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:08:59,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:08:59,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:08:59,556 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:08:59,568 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:08:59,570 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:08:59,573 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:08:59,576 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:08:59,580 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:08:59,581 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:08:59,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:08:59,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:08:59,587 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:08:59,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:08:59,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:08:59,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:08:59,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:08:59,596 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:08:59,607 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:08:59,609 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:08:59,611 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:08:59,612 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:08:59,613 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:08:59,616 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:08:59,616 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:08:59,616 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:08:59,620 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:08:59,620 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:08:59,622 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:08:59,623 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:08:59,623 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:08:59,624 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:08:59,625 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:08:59,627 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:08:59,627 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:08:59,628 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:08:59,628 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:08:59,628 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:08:59,630 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:08:59,631 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:08:59,632 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 [2020-09-25 10:08:59,679 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:08:59,679 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:08:59,682 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:08:59,682 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:08:59,682 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:08:59,683 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:08:59,683 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:08:59,683 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:08:59,683 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:08:59,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:08:59,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:08:59,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:08:59,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:08:59,686 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:08:59,686 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:08:59,686 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:08:59,686 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:08:59,687 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:08:59,687 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:08:59,687 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:08:59,687 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:08:59,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:08:59,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:08:59,688 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:08:59,688 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:08:59,688 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:08:59,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:08:59,689 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:08:59,689 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:08:59,689 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 -> SingleStatement 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=0.1;log-additional-information=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=0.1;log-additional-information=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=0.1;log-additional-information=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=0.1;log-additional-information=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=0.1;log-additional-information=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=0.1;log-additional-information=true; [2020-09-25 10:09:00,126 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:09:00,151 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:09:00,156 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:09:00,158 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:09:00,158 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:09:00,159 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label21.c [2020-09-25 10:09:00,252 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87e7d554a/37f512a2f4a4433c930f9449d71fb943/FLAG8806320c3 [2020-09-25 10:09:00,891 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:09:00,891 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label21.c [2020-09-25 10:09:00,906 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87e7d554a/37f512a2f4a4433c930f9449d71fb943/FLAG8806320c3 [2020-09-25 10:09:01,143 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87e7d554a/37f512a2f4a4433c930f9449d71fb943 [2020-09-25 10:09:01,158 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:09:01,165 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:09:01,166 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:09:01,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:09:01,175 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:09:01,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:09:01" (1/1) ... [2020-09-25 10:09:01,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d876c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:01, skipping insertion in model container [2020-09-25 10:09:01,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:09:01" (1/1) ... [2020-09-25 10:09:01,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:09:01,264 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:09:01,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:09:01,704 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:09:01,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:09:01,989 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:09:01,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:01 WrapperNode [2020-09-25 10:09:01,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:09:01,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:09:01,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:09:01,991 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:09:02,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:01" (1/1) ... [2020-09-25 10:09:02,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:01" (1/1) ... [2020-09-25 10:09:02,025 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:01" (1/1) ... [2020-09-25 10:09:02,025 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:01" (1/1) ... [2020-09-25 10:09:02,065 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:01" (1/1) ... [2020-09-25 10:09:02,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:01" (1/1) ... [2020-09-25 10:09:02,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:01" (1/1) ... [2020-09-25 10:09:02,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:09:02,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:09:02,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:09:02,104 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:09:02,105 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:01" (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 [2020-09-25 10:09:02,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:09:02,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:09:02,178 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:09:02,179 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:09:02,179 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:09:02,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:09:02,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:09:02,179 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:09:02,179 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:09:02,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:09:02,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:09:03,572 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:09:03,572 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:09:03,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:09:03 BoogieIcfgContainer [2020-09-25 10:09:03,581 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:09:03,583 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:09:03,583 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:09:03,587 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:09:03,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:09:01" (1/3) ... [2020-09-25 10:09:03,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb4822a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:09:03, skipping insertion in model container [2020-09-25 10:09:03,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:01" (2/3) ... [2020-09-25 10:09:03,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb4822a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:09:03, skipping insertion in model container [2020-09-25 10:09:03,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:09:03" (3/3) ... [2020-09-25 10:09:03,593 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label21.c [2020-09-25 10:09:03,605 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:09:03,617 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:09:03,640 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:09:03,675 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:09:03,676 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:09:03,676 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:09:03,676 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:09:03,676 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:09:03,676 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:09:03,677 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:09:03,677 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:09:03,719 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 10:09:03,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-25 10:09:03,740 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:03,741 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:09:03,742 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:03,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:03,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1196465745, now seen corresponding path program 1 times [2020-09-25 10:09:03,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:03,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087928403] [2020-09-25 10:09:03,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:04,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:04,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:04,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:05,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:06,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:06,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:06,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:06,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:09,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:09,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 10:09:09,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:09:09,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 10:09:09,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:09,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:09,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:09:09,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:09:09,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 10:09:09,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:09:09,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:09:09,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:09,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:09,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:09,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:09:09,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:09,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 10:09:09,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:09,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:09,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:09:09,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:09,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:09:09,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:09,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:09:09,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087928403] [2020-09-25 10:09:09,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:09:09,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:09:09,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423981341] [2020-09-25 10:09:09,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:09:09,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:09:09,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:09:09,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:09:09,436 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 10:09:11,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:09:11,692 INFO L93 Difference]: Finished difference Result 1205 states and 1651 transitions. [2020-09-25 10:09:11,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:09:11,697 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2020-09-25 10:09:11,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:09:11,725 INFO L225 Difference]: With dead ends: 1205 [2020-09-25 10:09:11,725 INFO L226 Difference]: Without dead ends: 627 [2020-09-25 10:09:11,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:09:11,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-09-25 10:09:11,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 613. [2020-09-25 10:09:11,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-09-25 10:09:11,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 774 transitions. [2020-09-25 10:09:11,840 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 774 transitions. Word has length 122 [2020-09-25 10:09:11,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:09:11,841 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 774 transitions. [2020-09-25 10:09:11,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:09:11,841 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 774 transitions. [2020-09-25 10:09:11,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-25 10:09:11,855 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:11,856 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 10:09:11,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:09:11,857 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:11,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:11,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1331654230, now seen corresponding path program 1 times [2020-09-25 10:09:11,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:11,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168811417] [2020-09-25 10:09:11,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:11,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:11,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:12,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:12,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:12,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:14,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:15,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:15,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 10:09:15,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:09:15,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3229 [2020-09-25 10:09:15,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:15,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:15,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:09:15,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 10:09:15,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 10:09:15,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:15,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:09:15,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:15,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:15,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:15,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:09:15,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:15,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 10:09:15,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:15,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:15,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:09:15,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:15,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:09:15,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:15,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:09:15,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:15,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:15,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:15,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:15,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 10:09:15,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:09:15,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-25 10:09:15,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:15,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:15,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:09:15,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:09:15,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 10:09:15,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:15,808 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:09:15,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168811417] [2020-09-25 10:09:15,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:09:15,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 10:09:15,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940705036] [2020-09-25 10:09:15,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 10:09:15,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:09:15,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 10:09:15,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:09:15,813 INFO L87 Difference]: Start difference. First operand 613 states and 774 transitions. Second operand 12 states. [2020-09-25 10:09:16,606 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-09-25 10:09:20,945 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-09-25 10:09:21,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:09:21,227 INFO L93 Difference]: Finished difference Result 2367 states and 3408 transitions. [2020-09-25 10:09:21,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 10:09:21,227 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 148 [2020-09-25 10:09:21,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:09:21,246 INFO L225 Difference]: With dead ends: 2367 [2020-09-25 10:09:21,246 INFO L226 Difference]: Without dead ends: 1417 [2020-09-25 10:09:21,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2020-09-25 10:09:21,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1417 states. [2020-09-25 10:09:21,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1417 to 1395. [2020-09-25 10:09:21,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1395 states. [2020-09-25 10:09:21,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1395 states to 1395 states and 1825 transitions. [2020-09-25 10:09:21,357 INFO L78 Accepts]: Start accepts. Automaton has 1395 states and 1825 transitions. Word has length 148 [2020-09-25 10:09:21,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:09:21,357 INFO L479 AbstractCegarLoop]: Abstraction has 1395 states and 1825 transitions. [2020-09-25 10:09:21,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 10:09:21,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1395 states and 1825 transitions. [2020-09-25 10:09:21,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 10:09:21,367 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:21,367 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] [2020-09-25 10:09:21,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:09:21,367 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:21,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:21,368 INFO L82 PathProgramCache]: Analyzing trace with hash -578383540, now seen corresponding path program 1 times [2020-09-25 10:09:21,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:21,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085464809] [2020-09-25 10:09:21,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:21,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:21,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:21,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:21,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:22,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:22,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:22,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:25,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:25,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:26,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:26,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 10:09:26,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:09:26,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 10:09:26,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:26,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:26,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:09:26,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:09:26,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 10:09:26,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:26,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:09:26,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:26,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:26,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:26,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:09:26,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:26,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 10:09:26,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:26,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:26,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:09:26,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:26,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:09:26,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:26,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:09:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:26,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:26,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:26,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:26,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 10:09:26,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:09:26,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-25 10:09:26,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:26,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:26,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:09:26,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:26,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:09:26,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:27,067 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:09:27,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085464809] [2020-09-25 10:09:27,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:09:27,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:09:27,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914967298] [2020-09-25 10:09:27,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:09:27,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:09:27,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:09:27,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:09:27,071 INFO L87 Difference]: Start difference. First operand 1395 states and 1825 transitions. Second operand 11 states. [2020-09-25 10:09:30,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:09:30,627 INFO L93 Difference]: Finished difference Result 3037 states and 4059 transitions. [2020-09-25 10:09:30,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:09:30,627 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 156 [2020-09-25 10:09:30,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:09:30,642 INFO L225 Difference]: With dead ends: 3037 [2020-09-25 10:09:30,643 INFO L226 Difference]: Without dead ends: 1404 [2020-09-25 10:09:30,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:09:30,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2020-09-25 10:09:30,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 1070. [2020-09-25 10:09:30,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1070 states. [2020-09-25 10:09:30,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1283 transitions. [2020-09-25 10:09:30,706 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1283 transitions. Word has length 156 [2020-09-25 10:09:30,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:09:30,706 INFO L479 AbstractCegarLoop]: Abstraction has 1070 states and 1283 transitions. [2020-09-25 10:09:30,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:09:30,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1283 transitions. [2020-09-25 10:09:30,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 10:09:30,713 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:30,713 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:09:30,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:09:30,717 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:30,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:30,718 INFO L82 PathProgramCache]: Analyzing trace with hash -866360781, now seen corresponding path program 1 times [2020-09-25 10:09:30,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:30,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964160709] [2020-09-25 10:09:30,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:30,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:31,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:31,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:31,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:32,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:32,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:32,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:33,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:35,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:35,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:35,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 10:09:35,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 10:09:35,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 10:09:35,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:35,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:35,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:09:35,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 10:09:35,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 10:09:35,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:35,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:09:35,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:35,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:36,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:36,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:09:36,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:36,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 10:09:36,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:36,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:36,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:09:36,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:36,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:09:36,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:09:36,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:09:36,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:36,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:36,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:36,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:36,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 10:09:36,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:09:36,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-25 10:09:36,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:36,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:36,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:09:36,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:09:36,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 10:09:36,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:09:36,909 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 35 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:09:36,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [964160709] [2020-09-25 10:09:36,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:09:36,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 10:09:36,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825572435] [2020-09-25 10:09:36,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 10:09:36,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:09:36,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 10:09:36,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:09:36,914 INFO L87 Difference]: Start difference. First operand 1070 states and 1283 transitions. Second operand 12 states. [2020-09-25 10:09:39,341 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2020-09-25 10:09:40,187 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2020-09-25 10:09:40,842 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-09-25 10:09:42,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:09:42,410 INFO L93 Difference]: Finished difference Result 1942 states and 2175 transitions. [2020-09-25 10:09:42,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 10:09:42,410 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 168 [2020-09-25 10:09:42,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:09:42,420 INFO L225 Difference]: With dead ends: 1942 [2020-09-25 10:09:42,420 INFO L226 Difference]: Without dead ends: 1377 [2020-09-25 10:09:42,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=188, Invalid=412, Unknown=0, NotChecked=0, Total=600 [2020-09-25 10:09:42,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1377 states. [2020-09-25 10:09:42,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1377 to 1051. [2020-09-25 10:09:42,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1051 states. [2020-09-25 10:09:42,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1254 transitions. [2020-09-25 10:09:42,463 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1254 transitions. Word has length 168 [2020-09-25 10:09:42,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:09:42,463 INFO L479 AbstractCegarLoop]: Abstraction has 1051 states and 1254 transitions. [2020-09-25 10:09:42,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 10:09:42,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1254 transitions. [2020-09-25 10:09:42,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-25 10:09:42,468 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:42,469 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:09:42,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:09:42,469 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:42,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:42,469 INFO L82 PathProgramCache]: Analyzing trace with hash -2120706846, now seen corresponding path program 1 times [2020-09-25 10:09:42,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:42,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1259893325] [2020-09-25 10:09:42,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:42,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:42,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:42,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:42,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:43,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:43,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:45,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:45,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:45,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-09-25 10:09:45,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:09:45,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3491 [2020-09-25 10:09:45,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:45,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:45,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:09:45,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 10:09:45,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-09-25 10:09:45,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:46,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:09:46,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:46,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:46,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:46,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:09:46,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:46,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 10:09:46,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:46,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:46,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:09:46,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:46,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 10:09:46,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:09:46,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:09:46,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:46,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:46,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:46,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:46,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 10:09:46,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:09:46,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-25 10:09:46,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:46,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:46,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:09:46,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:09:46,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 10:09:46,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:09:46,329 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:09:46,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1259893325] [2020-09-25 10:09:46,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:09:46,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:09:46,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587320677] [2020-09-25 10:09:46,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:09:46,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:09:46,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:09:46,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:09:46,332 INFO L87 Difference]: Start difference. First operand 1051 states and 1254 transitions. Second operand 6 states. [2020-09-25 10:09:48,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:09:48,281 INFO L93 Difference]: Finished difference Result 2750 states and 3399 transitions. [2020-09-25 10:09:48,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 10:09:48,285 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 173 [2020-09-25 10:09:48,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:09:48,296 INFO L225 Difference]: With dead ends: 2750 [2020-09-25 10:09:48,297 INFO L226 Difference]: Without dead ends: 1563 [2020-09-25 10:09:48,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:09:48,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1563 states. [2020-09-25 10:09:48,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1563 to 1521. [2020-09-25 10:09:48,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1521 states. [2020-09-25 10:09:48,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 1786 transitions. [2020-09-25 10:09:48,360 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 1786 transitions. Word has length 173 [2020-09-25 10:09:48,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:09:48,361 INFO L479 AbstractCegarLoop]: Abstraction has 1521 states and 1786 transitions. [2020-09-25 10:09:48,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:09:48,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 1786 transitions. [2020-09-25 10:09:48,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-25 10:09:48,368 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:48,368 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:09:48,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:09:48,369 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:48,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:48,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1865147849, now seen corresponding path program 1 times [2020-09-25 10:09:48,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:48,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127321687] [2020-09-25 10:09:48,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:48,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:48,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:48,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:48,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:48,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:49,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking...