/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=0.4 --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/Problem01_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:29:44,526 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:29:44,530 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:29:44,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:29:44,557 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:29:44,558 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:29:44,559 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:29:44,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:29:44,563 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:29:44,564 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:29:44,565 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:29:44,566 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:29:44,567 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:29:44,568 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:29:44,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:29:44,570 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:29:44,571 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:29:44,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:29:44,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:29:44,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:29:44,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:29:44,578 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:29:44,579 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:29:44,580 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:29:44,583 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:29:44,583 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:29:44,583 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:29:44,584 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:29:44,585 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:29:44,586 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:29:44,586 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:29:44,587 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:29:44,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:29:44,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:29:44,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:29:44,591 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:29:44,592 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:29:44,592 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:29:44,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:29:44,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:29:44,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:29:44,595 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 13:29:44,634 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:29:44,634 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:29:44,637 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:29:44,637 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:29:44,637 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:29:44,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:29:44,638 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:29:44,638 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:29:44,638 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:29:44,639 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:29:44,639 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:29:44,640 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:29:44,640 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:29:44,640 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:29:44,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:29:44,641 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:29:44,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:29:44,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:29:44,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:29:44,642 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:29:44,642 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:29:44,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:29:44,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:29:44,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:29:44,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:29:44,644 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:29:44,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:29:44,644 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:29:44,644 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:29:44,644 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 13:29:45,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:29:45,156 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:29:45,162 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:29:45,164 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:29:45,164 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:29:45,166 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label42.c [2020-09-25 13:29:45,252 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/154ebf3ca/229d72f95f344fe88cf4a174fe34e68b/FLAG0cc43e874 [2020-09-25 13:29:45,933 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:29:45,933 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label42.c [2020-09-25 13:29:45,945 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/154ebf3ca/229d72f95f344fe88cf4a174fe34e68b/FLAG0cc43e874 [2020-09-25 13:29:46,168 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/154ebf3ca/229d72f95f344fe88cf4a174fe34e68b [2020-09-25 13:29:46,182 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:29:46,188 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:29:46,190 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:29:46,190 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:29:46,194 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:29:46,196 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:29:46" (1/1) ... [2020-09-25 13:29:46,200 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21af3704 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:46, skipping insertion in model container [2020-09-25 13:29:46,201 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:29:46" (1/1) ... [2020-09-25 13:29:46,210 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:29:46,285 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:29:46,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:29:46,771 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:29:47,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:29:47,075 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:29:47,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:47 WrapperNode [2020-09-25 13:29:47,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:29:47,076 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:29:47,077 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:29:47,077 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:29:47,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:47" (1/1) ... [2020-09-25 13:29:47,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:47" (1/1) ... [2020-09-25 13:29:47,118 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:47" (1/1) ... [2020-09-25 13:29:47,118 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:47" (1/1) ... [2020-09-25 13:29:47,168 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:47" (1/1) ... [2020-09-25 13:29:47,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:47" (1/1) ... [2020-09-25 13:29:47,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:47" (1/1) ... [2020-09-25 13:29:47,201 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:29:47,202 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:29:47,202 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:29:47,202 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:29:47,203 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:47" (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 13:29:47,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:29:47,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:29:47,276 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:29:47,276 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:29:47,276 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:29:47,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:29:47,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:29:47,276 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:29:47,276 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:29:47,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:29:47,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:29:48,659 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:29:48,659 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:29:48,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:29:48 BoogieIcfgContainer [2020-09-25 13:29:48,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:29:48,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:29:48,683 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:29:48,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:29:48,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:29:46" (1/3) ... [2020-09-25 13:29:48,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@570d3c0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:29:48, skipping insertion in model container [2020-09-25 13:29:48,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:47" (2/3) ... [2020-09-25 13:29:48,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@570d3c0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:29:48, skipping insertion in model container [2020-09-25 13:29:48,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:29:48" (3/3) ... [2020-09-25 13:29:48,691 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label42.c [2020-09-25 13:29:48,702 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:29:48,719 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:29:48,741 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:29:48,779 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:29:48,779 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:29:48,779 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:29:48,780 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:29:48,780 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:29:48,780 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:29:48,780 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:29:48,780 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:29:48,814 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 13:29:48,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 13:29:48,839 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:48,841 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:29:48,841 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:48,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:48,848 INFO L82 PathProgramCache]: Analyzing trace with hash 907543029, now seen corresponding path program 1 times [2020-09-25 13:29:48,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:48,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593212538] [2020-09-25 13:29:48,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:49,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:49,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:49,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:50,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:51,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:54,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:54,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-25 13:29:54,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:29:54,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 13:29:54,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:54,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:54,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:29:54,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 13:29:54,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 13:29:54,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:29:54,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:54,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:54,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:54,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:54,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:54,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:54,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 13:29:54,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:54,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:54,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:29:54,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:54,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 13:29:54,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:54,487 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 13:29:54,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [593212538] [2020-09-25 13:29:54,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:29:54,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:29:54,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328253356] [2020-09-25 13:29:54,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:29:54,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:54,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:29:54,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:29:54,526 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-25 13:29:57,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:57,169 INFO L93 Difference]: Finished difference Result 1360 states and 1895 transitions. [2020-09-25 13:29:57,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:29:57,171 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-09-25 13:29:57,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:57,196 INFO L225 Difference]: With dead ends: 1360 [2020-09-25 13:29:57,196 INFO L226 Difference]: Without dead ends: 781 [2020-09-25 13:29:57,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:29:57,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2020-09-25 13:29:57,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 746. [2020-09-25 13:29:57,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2020-09-25 13:29:57,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 914 transitions. [2020-09-25 13:29:57,321 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 914 transitions. Word has length 143 [2020-09-25 13:29:57,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:57,322 INFO L479 AbstractCegarLoop]: Abstraction has 746 states and 914 transitions. [2020-09-25 13:29:57,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:29:57,322 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 914 transitions. [2020-09-25 13:29:57,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 13:29:57,336 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:57,336 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 13:29:57,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:29:57,337 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:57,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:57,337 INFO L82 PathProgramCache]: Analyzing trace with hash -581235324, now seen corresponding path program 1 times [2020-09-25 13:29:57,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:57,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726856215] [2020-09-25 13:29:57,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:57,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:57,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:57,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:57,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:57,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:58,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:00,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:02,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:02,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:02,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 13:30:02,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:30:02,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 13:30:02,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:02,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:02,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:30:02,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 13:30:02,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 13:30:02,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:02,941 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 30 [2020-09-25 13:30:02,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:03,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:03,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:03,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:03,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:30:03,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:03,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:30:03,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:03,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:03,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:30:03,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:03,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:30:03,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:03,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:30:03,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:03,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:03,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:03,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 13:30:03,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:03,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 13:30:03,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:03,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:03,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:30:03,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:03,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:30:03,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:03,349 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:30:03,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726856215] [2020-09-25 13:30:03,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:30:03,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:30:03,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594207764] [2020-09-25 13:30:03,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:30:03,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:03,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:30:03,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:30:03,354 INFO L87 Difference]: Start difference. First operand 746 states and 914 transitions. Second operand 9 states. [2020-09-25 13:30:08,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:30:08,345 INFO L93 Difference]: Finished difference Result 2047 states and 2680 transitions. [2020-09-25 13:30:08,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 13:30:08,347 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 164 [2020-09-25 13:30:08,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:30:08,360 INFO L225 Difference]: With dead ends: 2047 [2020-09-25 13:30:08,360 INFO L226 Difference]: Without dead ends: 1030 [2020-09-25 13:30:08,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2020-09-25 13:30:08,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2020-09-25 13:30:08,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 1003. [2020-09-25 13:30:08,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2020-09-25 13:30:08,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1169 transitions. [2020-09-25 13:30:08,413 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1169 transitions. Word has length 164 [2020-09-25 13:30:08,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:30:08,414 INFO L479 AbstractCegarLoop]: Abstraction has 1003 states and 1169 transitions. [2020-09-25 13:30:08,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:30:08,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1169 transitions. [2020-09-25 13:30:08,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 13:30:08,419 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:08,419 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 13:30:08,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:30:08,420 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:08,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:08,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1195548531, now seen corresponding path program 1 times [2020-09-25 13:30:08,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:08,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1747994615] [2020-09-25 13:30:08,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:08,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:08,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:08,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:08,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:08,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:08,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:09,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:09,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:09,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:09,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:13,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:13,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 13:30:13,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:30:13,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 13:30:13,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:13,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:13,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:30:13,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 13:30:13,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 13:30:13,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:13,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:13,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:13,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:13,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:13,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:30:13,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:13,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:30:13,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:13,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:13,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:30:13,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:13,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:30:13,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:13,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:30:13,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:13,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:13,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:13,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 13:30:13,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:13,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 13:30:13,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:13,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:13,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:30:13,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:13,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:30:13,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:13,688 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:30:13,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1747994615] [2020-09-25 13:30:13,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:30:13,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:30:13,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014415322] [2020-09-25 13:30:13,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:30:13,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:13,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:30:13,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:30:13,692 INFO L87 Difference]: Start difference. First operand 1003 states and 1169 transitions. Second operand 5 states. [2020-09-25 13:30:15,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:30:15,481 INFO L93 Difference]: Finished difference Result 2467 states and 2981 transitions. [2020-09-25 13:30:15,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:30:15,482 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-09-25 13:30:15,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:30:15,501 INFO L225 Difference]: With dead ends: 2467 [2020-09-25 13:30:15,501 INFO L226 Difference]: Without dead ends: 1488 [2020-09-25 13:30:15,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:30:15,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1488 states. [2020-09-25 13:30:15,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1488 to 1291. [2020-09-25 13:30:15,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1291 states. [2020-09-25 13:30:15,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1291 states to 1291 states and 1537 transitions. [2020-09-25 13:30:15,584 INFO L78 Accepts]: Start accepts. Automaton has 1291 states and 1537 transitions. Word has length 168 [2020-09-25 13:30:15,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:30:15,585 INFO L479 AbstractCegarLoop]: Abstraction has 1291 states and 1537 transitions. [2020-09-25 13:30:15,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:30:15,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states and 1537 transitions. [2020-09-25 13:30:15,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-09-25 13:30:15,595 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:15,595 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:30:15,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:30:15,596 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:15,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:15,604 INFO L82 PathProgramCache]: Analyzing trace with hash -390929757, now seen corresponding path program 1 times [2020-09-25 13:30:15,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:15,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632791842] [2020-09-25 13:30:15,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:15,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:15,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:15,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:15,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:15,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:17,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:17,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:17,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:18,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:18,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:20,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:20,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-09-25 13:30:20,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:30:20,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 13:30:20,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:20,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:20,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:30:20,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 13:30:20,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 13:30:20,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:30:20,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:20,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:20,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:20,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:20,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:30:20,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:20,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:30:20,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:20,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:20,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:30:20,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:20,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:30:20,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:20,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:30:20,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:20,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:20,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:20,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 13:30:20,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:20,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 13:30:20,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:20,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:20,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:30:20,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:20,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:30:20,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:20,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 13:30:20,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:20,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:20,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:20,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 13:30:20,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:20,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 13:30:20,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:20,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:20,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:30:20,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:30:20,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 13:30:20,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:21,057 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 60 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:30:21,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632791842] [2020-09-25 13:30:21,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:30:21,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:30:21,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449118237] [2020-09-25 13:30:21,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:30:21,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:21,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:30:21,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:30:21,061 INFO L87 Difference]: Start difference. First operand 1291 states and 1537 transitions. Second operand 7 states. [2020-09-25 13:30:23,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:30:23,004 INFO L93 Difference]: Finished difference Result 3557 states and 4337 transitions. [2020-09-25 13:30:23,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 13:30:23,007 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 209 [2020-09-25 13:30:23,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:30:23,035 INFO L225 Difference]: With dead ends: 3557 [2020-09-25 13:30:23,036 INFO L226 Difference]: Without dead ends: 2290 [2020-09-25 13:30:23,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:30:23,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2290 states. [2020-09-25 13:30:23,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2290 to 2083. [2020-09-25 13:30:23,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2083 states. [2020-09-25 13:30:23,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 2525 transitions. [2020-09-25 13:30:23,103 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 2525 transitions. Word has length 209 [2020-09-25 13:30:23,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:30:23,103 INFO L479 AbstractCegarLoop]: Abstraction has 2083 states and 2525 transitions. [2020-09-25 13:30:23,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:30:23,104 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 2525 transitions. [2020-09-25 13:30:23,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-25 13:30:23,112 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:23,113 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:30:23,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:30:23,113 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:23,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:23,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1933456907, now seen corresponding path program 1 times [2020-09-25 13:30:23,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:23,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201336964] [2020-09-25 13:30:23,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:23,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:23,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:23,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:23,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:24,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:24,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:26,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:27,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:27,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:27,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:27,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:27,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:28,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:28,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:28,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-09-25 13:30:28,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 13:30:28,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 13:30:28,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:28,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:28,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 13:30:28,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 13:30:28,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 13:30:28,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:30:28,639 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2020-09-25 13:30:28,846 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 46 [2020-09-25 13:30:29,111 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 49 [2020-09-25 13:30:29,332 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 46 [2020-09-25 13:30:29,531 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 42 [2020-09-25 13:30:29,710 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 39 [2020-09-25 13:30:29,870 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 34 [2020-09-25 13:30:29,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:29,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:29,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:29,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:29,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:30:29,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:29,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 13:30:29,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:29,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:29,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:30:29,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:29,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 13:30:29,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:29,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:30:29,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:29,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:30,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:30,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:30,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 13:30:30,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:30:30,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-25 13:30:30,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:30,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:30,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:30:30,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:30,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 13:30:30,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:30,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 13:30:30,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:30,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:30,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:30,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 13:30:30,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:30,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-09-25 13:30:30,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:30,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:30,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:30:30,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:30:30,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 13:30:30,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:30,638 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 40 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:30:30,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201336964] [2020-09-25 13:30:30,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:30:30,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 13:30:30,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819551809] [2020-09-25 13:30:30,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 13:30:30,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:30,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 13:30:30,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2020-09-25 13:30:30,641 INFO L87 Difference]: Start difference. First operand 2083 states and 2525 transitions. Second operand 21 states. [2020-09-25 13:30:30,934 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-09-25 13:30:31,457 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-09-25 13:30:31,979 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-09-25 13:30:32,406 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2020-09-25 13:30:32,746 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-09-25 13:30:35,228 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 96 [2020-09-25 13:30:35,705 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 116