/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/tree_del_iter_incorrect.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:03:40,628 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:03:40,632 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:03:40,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:03:40,680 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:03:40,690 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:03:40,693 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:03:40,697 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:03:40,700 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:03:40,703 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:03:40,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:03:40,705 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:03:40,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:03:40,709 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:03:40,712 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:03:40,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:03:40,716 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:03:40,717 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:03:40,720 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:03:40,727 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:03:40,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:03:40,731 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:03:40,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:03:40,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:03:40,737 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:03:40,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:03:40,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:03:40,740 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:03:40,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:03:40,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:03:40,742 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:03:40,743 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:03:40,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:03:40,744 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:03:40,746 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:03:40,746 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:03:40,747 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:03:40,747 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:03:40,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:03:40,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:03:40,750 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:03:40,751 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 08:03:40,799 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:03:40,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:03:40,802 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:03:40,802 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:03:40,802 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:03:40,802 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:03:40,803 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:03:40,803 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:03:40,803 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:03:40,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:03:40,804 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:03:40,805 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:03:40,805 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:03:40,805 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:03:40,806 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:03:40,806 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:03:40,806 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:03:40,806 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:03:40,806 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:03:40,807 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:03:40,807 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:03:40,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:03:40,807 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:03:40,808 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:03:40,808 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:03:40,808 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:03:40,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:03:40,808 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:03:40,809 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:03:40,809 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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 08:03:41,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:03:41,272 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:03:41,278 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:03:41,279 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:03:41,282 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:03:41,283 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/tree_del_iter_incorrect.c [2020-09-25 08:03:41,352 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9f260783/ba58572be3ba492a9e4346cd2deb36cd/FLAG6fcb59793 [2020-09-25 08:03:41,930 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:03:41,931 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/tree_del_iter_incorrect.c [2020-09-25 08:03:41,939 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9f260783/ba58572be3ba492a9e4346cd2deb36cd/FLAG6fcb59793 [2020-09-25 08:03:42,248 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9f260783/ba58572be3ba492a9e4346cd2deb36cd [2020-09-25 08:03:42,261 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:03:42,267 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:03:42,268 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:03:42,269 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:03:42,273 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:03:42,274 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:03:42" (1/1) ... [2020-09-25 08:03:42,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20e20dd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:03:42, skipping insertion in model container [2020-09-25 08:03:42,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:03:42" (1/1) ... [2020-09-25 08:03:42,286 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:03:42,313 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:03:42,585 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 08:03:42,601 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:03:42,617 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:03:42,733 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 08:03:42,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:03:42,771 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:03:42,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:03:42 WrapperNode [2020-09-25 08:03:42,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:03:42,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:03:42,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:03:42,773 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:03:42,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:03:42" (1/1) ... [2020-09-25 08:03:42,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:03:42" (1/1) ... [2020-09-25 08:03:42,800 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:03:42" (1/1) ... [2020-09-25 08:03:42,801 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:03:42" (1/1) ... [2020-09-25 08:03:42,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:03:42" (1/1) ... [2020-09-25 08:03:42,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:03:42" (1/1) ... [2020-09-25 08:03:42,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:03:42" (1/1) ... [2020-09-25 08:03:42,834 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:03:42,835 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:03:42,835 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:03:42,835 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:03:42,836 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:03:42" (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 08:03:42,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:03:42,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:03:42,913 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 08:03:42,913 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 08:03:42,913 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2020-09-25 08:03:42,914 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2020-09-25 08:03:42,915 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del [2020-09-25 08:03:42,915 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2020-09-25 08:03:42,916 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2020-09-25 08:03:42,916 INFO L138 BoogieDeclarations]: Found implementation of procedure task [2020-09-25 08:03:42,916 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:03:42,916 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-25 08:03:42,916 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 08:03:42,917 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 08:03:42,917 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 08:03:42,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 08:03:42,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 08:03:42,918 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 08:03:42,918 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 08:03:42,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:03:42,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 08:03:42,919 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2020-09-25 08:03:42,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 08:03:42,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 08:03:42,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 08:03:42,920 INFO L130 BoogieDeclarations]: Found specification of procedure min [2020-09-25 08:03:42,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 08:03:42,921 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del [2020-09-25 08:03:42,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 08:03:42,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 08:03:42,921 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2020-09-25 08:03:42,921 INFO L130 BoogieDeclarations]: Found specification of procedure size [2020-09-25 08:03:42,922 INFO L130 BoogieDeclarations]: Found specification of procedure task [2020-09-25 08:03:42,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 08:03:42,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-25 08:03:42,922 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:03:42,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:03:42,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:03:43,495 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:03:43,495 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 08:03:43,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:03:43 BoogieIcfgContainer [2020-09-25 08:03:43,503 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:03:43,505 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:03:43,505 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:03:43,509 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:03:43,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:03:42" (1/3) ... [2020-09-25 08:03:43,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f5c990f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:03:43, skipping insertion in model container [2020-09-25 08:03:43,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:03:42" (2/3) ... [2020-09-25 08:03:43,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f5c990f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:03:43, skipping insertion in model container [2020-09-25 08:03:43,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:03:43" (3/3) ... [2020-09-25 08:03:43,513 INFO L109 eAbstractionObserver]: Analyzing ICFG tree_del_iter_incorrect.c [2020-09-25 08:03:43,525 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:03:43,536 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:03:43,559 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:03:43,593 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:03:43,593 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:03:43,594 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:03:43,594 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:03:43,594 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:03:43,594 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:03:43,594 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:03:43,595 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:03:43,623 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states. [2020-09-25 08:03:43,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 08:03:43,637 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:03:43,639 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] [2020-09-25 08:03:43,640 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:03:43,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:03:43,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1732590877, now seen corresponding path program 1 times [2020-09-25 08:03:43,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:03:43,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1388815103] [2020-09-25 08:03:43,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:03:43,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:43,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:44,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:44,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 08:03:44,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:44,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 681 [2020-09-25 08:03:44,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:44,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:44,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:03:44,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 08:03:44,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:03:44,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 08:03:44,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:03:44,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:44,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:44,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:44,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:03:44,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:44,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 08:03:44,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:44,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:44,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:03:44,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:44,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:03:44,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:44,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 08:03:44,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:44,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:44,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:44,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:03:44,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:44,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 08:03:44,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:44,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:44,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:03:44,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:44,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:03:44,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:03:44,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 08:03:44,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:44,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:44,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:44,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:03:44,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:44,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:03:44,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:44,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:44,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:03:44,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:44,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:03:44,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:44,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 08:03:44,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:44,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:44,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:44,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:03:44,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:44,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 08:03:44,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:44,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:44,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:03:44,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:44,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:44,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:03:44,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 08:03:44,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:44,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:44,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:44,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:44,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:44,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 08:03:44,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:44,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:44,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:03:44,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:03:44,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:44,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:44,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 08:03:44,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:44,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:44,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:44,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 08:03:44,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:44,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:03:44,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:44,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:44,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:03:44,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 08:03:44,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:03:44,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:44,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 08:03:44,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:44,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:44,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:44,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:03:44,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:44,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:03:44,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:44,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:44,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:03:44,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 08:03:44,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:03:44,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:44,961 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 08:03:44,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1388815103] [2020-09-25 08:03:44,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:03:44,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 08:03:44,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558443731] [2020-09-25 08:03:44,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 08:03:44,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:03:44,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 08:03:44,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 08:03:44,992 INFO L87 Difference]: Start difference. First operand 199 states. Second operand 11 states. [2020-09-25 08:03:46,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:03:46,284 INFO L93 Difference]: Finished difference Result 357 states and 415 transitions. [2020-09-25 08:03:46,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 08:03:46,286 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-09-25 08:03:46,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:03:46,305 INFO L225 Difference]: With dead ends: 357 [2020-09-25 08:03:46,305 INFO L226 Difference]: Without dead ends: 205 [2020-09-25 08:03:46,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2020-09-25 08:03:46,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-09-25 08:03:46,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 191. [2020-09-25 08:03:46,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-09-25 08:03:46,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 214 transitions. [2020-09-25 08:03:46,398 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 214 transitions. Word has length 60 [2020-09-25 08:03:46,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:03:46,399 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 214 transitions. [2020-09-25 08:03:46,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 08:03:46,399 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 214 transitions. [2020-09-25 08:03:46,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 08:03:46,404 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:03:46,405 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-25 08:03:46,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:03:46,406 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:03:46,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:03:46,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1923885975, now seen corresponding path program 1 times [2020-09-25 08:03:46,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:03:46,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130434580] [2020-09-25 08:03:46,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:03:46,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:46,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:46,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:46,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:50,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:50,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-25 08:03:50,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:03:50,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4172 [2020-09-25 08:03:50,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:50,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:50,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:03:50,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 08:03:50,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 08:03:50,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:03:50,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:03:50,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:50,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:50,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:50,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:03:50,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:50,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:03:50,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:50,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:50,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:03:50,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:50,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:03:50,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:50,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 08:03:50,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:50,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:50,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:50,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:03:50,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:50,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:03:50,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:50,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:50,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:03:50,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:50,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:03:50,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:50,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 08:03:50,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:50,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:50,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:50,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:03:50,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:50,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:03:50,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:50,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:50,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:03:50,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:50,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:03:50,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:50,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 08:03:50,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:50,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:50,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:50,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 08:03:50,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:50,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 08:03:50,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:50,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:50,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:03:50,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:50,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 08:03:50,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:50,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:03:50,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:50,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:50,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:50,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:03:50,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:50,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:03:50,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:50,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:50,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:50,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:50,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:03:50,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:50,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:03:50,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:50,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:50,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:50,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:03:50,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:50,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:03:50,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:50,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:50,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:50,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:50,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:03:50,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:50,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 08:03:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:50,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:50,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:50,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:50,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:50,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:03:50,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:50,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:50,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:50,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:50,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:50,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:50,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 08:03:50,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:50,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:50,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:50,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 08:03:50,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:50,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:03:50,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:50,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:50,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:50,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:50,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 08:03:50,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:50,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 08:03:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:50,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:50,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:50,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:03:50,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:50,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 08:03:50,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:50,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:50,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:03:50,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:03:50,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:03:50,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:50,973 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 08:03:50,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130434580] [2020-09-25 08:03:50,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:03:50,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 08:03:50,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686249728] [2020-09-25 08:03:50,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 08:03:50,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:03:50,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 08:03:50,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 08:03:50,977 INFO L87 Difference]: Start difference. First operand 191 states and 214 transitions. Second operand 11 states. [2020-09-25 08:03:52,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:03:52,137 INFO L93 Difference]: Finished difference Result 332 states and 374 transitions. [2020-09-25 08:03:52,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 08:03:52,138 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 80 [2020-09-25 08:03:52,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:03:52,145 INFO L225 Difference]: With dead ends: 332 [2020-09-25 08:03:52,145 INFO L226 Difference]: Without dead ends: 207 [2020-09-25 08:03:52,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2020-09-25 08:03:52,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-09-25 08:03:52,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 195. [2020-09-25 08:03:52,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-09-25 08:03:52,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 219 transitions. [2020-09-25 08:03:52,190 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 219 transitions. Word has length 80 [2020-09-25 08:03:52,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:03:52,191 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 219 transitions. [2020-09-25 08:03:52,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 08:03:52,191 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 219 transitions. [2020-09-25 08:03:52,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-25 08:03:52,200 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:03:52,201 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2020-09-25 08:03:52,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:03:52,201 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:03:52,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:03:52,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1290663058, now seen corresponding path program 1 times [2020-09-25 08:03:52,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:03:52,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33736305] [2020-09-25 08:03:52,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:03:52,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:52,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:52,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:52,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:53,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:57,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:57,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 08:03:57,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:03:57,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 08:03:57,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:57,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:57,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:03:57,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 08:03:57,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 08:03:57,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:57,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:03:57,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:57,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:57,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:57,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:03:57,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:57,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:03:57,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:57,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:57,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:03:57,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:57,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:03:57,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:57,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 08:03:57,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:57,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:57,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:57,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:03:57,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:57,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 08:03:57,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:57,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:57,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:03:57,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:57,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:57,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:57,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 08:03:57,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:57,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:57,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:57,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:57,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:03:57,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:03:57,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 08:03:57,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:57,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:57,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:57,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:57,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:03:57,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:57,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 08:03:57,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:57,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:57,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:57,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:57,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 08:03:57,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:03:57,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 08:03:57,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:57,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:57,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:57,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:57,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 08:03:57,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 08:03:57,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:03:57,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:57,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:57,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:57,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:03:57,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:57,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:03:57,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:57,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:57,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:03:57,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:57,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:03:57,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:57,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:03:57,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:57,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:57,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:57,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:03:57,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:57,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:03:57,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:57,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:57,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:03:57,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:57,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:03:57,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:57,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 08:03:57,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:57,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:57,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:57,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:57,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:57,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:03:57,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:57,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:57,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:57,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:57,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:57,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:57,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 08:03:57,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:57,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:57,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:57,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 08:03:57,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:57,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:03:57,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:57,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:57,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:57,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:57,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 08:03:57,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:57,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 08:03:57,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:57,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:57,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:57,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 08:03:57,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:57,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 08:03:57,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:57,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:57,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:03:57,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:03:57,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 08:03:57,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:57,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:03:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:57,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:57,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:57,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:03:57,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:57,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:03:57,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:57,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:57,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:57,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:57,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:03:57,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:57,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 08:03:57,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:57,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:57,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:57,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:03:57,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:57,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:03:57,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:57,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:57,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:57,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:57,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:03:57,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:57,881 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-25 08:03:57,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33736305] [2020-09-25 08:03:57,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:03:57,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 08:03:57,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581395663] [2020-09-25 08:03:57,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 08:03:57,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:03:57,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 08:03:57,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-09-25 08:03:57,887 INFO L87 Difference]: Start difference. First operand 195 states and 219 transitions. Second operand 12 states. [2020-09-25 08:03:59,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:03:59,261 INFO L93 Difference]: Finished difference Result 351 states and 396 transitions. [2020-09-25 08:03:59,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 08:03:59,262 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2020-09-25 08:03:59,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:03:59,265 INFO L225 Difference]: With dead ends: 351 [2020-09-25 08:03:59,265 INFO L226 Difference]: Without dead ends: 206 [2020-09-25 08:03:59,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2020-09-25 08:03:59,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-09-25 08:03:59,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 197. [2020-09-25 08:03:59,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-09-25 08:03:59,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 222 transitions. [2020-09-25 08:03:59,300 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 222 transitions. Word has length 112 [2020-09-25 08:03:59,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:03:59,300 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 222 transitions. [2020-09-25 08:03:59,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 08:03:59,302 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 222 transitions. [2020-09-25 08:03:59,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 08:03:59,306 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:03:59,307 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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 08:03:59,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:03:59,307 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:03:59,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:03:59,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1069363160, now seen corresponding path program 1 times [2020-09-25 08:03:59,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:03:59,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2141717646] [2020-09-25 08:03:59,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:03:59,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:59,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:59,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:59,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:04,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:04,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 08:04:04,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:04:04,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 08:04:04,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:04,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:04,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:04:04,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 08:04:04,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 08:04:04,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:04:04,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:04:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:04,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:04,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:04,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:04:04,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:04:04,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 08:04:04,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:04,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:04,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:04:04,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:04:04,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:04:04,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:04:04,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 08:04:04,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:04,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:04,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:04,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 08:04:04,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:04:04,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 08:04:04,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:04,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:04,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:04:04,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:04:04,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:04:04,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:04:04,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 08:04:04,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:04,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:04,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:04,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:04:04,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:04:04,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:04:04,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:04,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:04,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:04:04,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:04:04,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:04:04,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:04:04,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 08:04:04,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:04,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:04,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:04,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:04:04,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:04:04,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:04:04,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:04,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:04,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:04:04,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:04:04,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:04:04,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:04:04,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 08:04:04,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:04,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:04,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:04,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:04:04,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:04:04,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 08:04:04,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:04,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:04,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:04:04,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:04:04,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:04:04,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:04:04,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 08:04:04,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:04,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:04,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:04,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:04,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 08:04:04,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:04:04,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 08:04:04,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:04,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:04,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:04:04,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:04:04,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 08:04:04,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:04:04,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:04:04,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:04,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:04,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:04,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:04:04,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:04:04,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:04:04,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:04,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:04,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:04:04,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:04:04,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:04:04,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:04:04,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:04:04,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:04,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:04,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:04,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:04:04,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:04:04,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:04:04,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:04,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:04,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:04:04,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:04:04,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:04:04,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 08:04:04,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-25 08:04:04,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:04,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:04,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:04,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:04:04,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:04:04,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:04:04,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:04,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:04,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:04:04,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:04:04,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:04:04,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:04:04,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-25 08:04:04,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:04,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:04,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:04,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 08:04:04,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:04:04,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:04:04,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:04,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:04,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:04:04,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:04:04,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 08:04:04,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:04:04,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 08:04:04,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:04,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:04,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:04,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 08:04:04,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:04:04,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 08:04:04,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:04,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:04,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:04:04,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:04:04,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 08:04:04,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:04:04,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:04:04,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:04,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:04,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:04,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:04:04,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:04:04,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:04:04,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:04,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:04,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:04:04,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:04:04,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:04:04,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:04:04,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 08:04:04,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:04,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:04,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:04,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:04:04,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:04:04,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:04:04,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:04,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:04,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:04:04,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:04:04,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:04:04,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:04:04,983 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 08:04:04,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2141717646] [2020-09-25 08:04:04,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:04:04,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 08:04:04,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489193331] [2020-09-25 08:04:04,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 08:04:04,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:04:04,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 08:04:04,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 08:04:04,987 INFO L87 Difference]: Start difference. First operand 197 states and 222 transitions. Second operand 11 states. [2020-09-25 08:04:06,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:04:06,071 INFO L93 Difference]: Finished difference Result 350 states and 395 transitions. [2020-09-25 08:04:06,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 08:04:06,071 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 133 [2020-09-25 08:04:06,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:04:06,075 INFO L225 Difference]: With dead ends: 350 [2020-09-25 08:04:06,076 INFO L226 Difference]: Without dead ends: 208 [2020-09-25 08:04:06,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-09-25 08:04:06,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-09-25 08:04:06,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 199. [2020-09-25 08:04:06,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-09-25 08:04:06,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 225 transitions. [2020-09-25 08:04:06,090 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 225 transitions. Word has length 133 [2020-09-25 08:04:06,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:04:06,091 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 225 transitions. [2020-09-25 08:04:06,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 08:04:06,091 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 225 transitions. [2020-09-25 08:04:06,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 08:04:06,093 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:04:06,093 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 08:04:06,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:04:06,094 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:04:06,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:04:06,094 INFO L82 PathProgramCache]: Analyzing trace with hash 757817759, now seen corresponding path program 1 times [2020-09-25 08:04:06,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:04:06,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281684376] [2020-09-25 08:04:06,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:04:06,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:06,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:06,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:07,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:07,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-25 08:04:07,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:04:07,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1351 [2020-09-25 08:04:07,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:07,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:07,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:04:07,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-09-25 08:04:07,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 08:04:07,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:04:07,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:04:07,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:07,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:07,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:07,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:04:07,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:04:07,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:04:07,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:07,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:07,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:04:07,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:04:07,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:04:07,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:04:07,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 08:04:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:07,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:07,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:07,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 08:04:07,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:04:07,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 08:04:07,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:07,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:07,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:04:07,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:04:07,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:04:07,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:04:07,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 08:04:07,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:07,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:07,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:07,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:04:07,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:04:07,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:04:07,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:07,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:07,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:04:07,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:04:07,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:04:07,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:04:07,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 08:04:07,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:07,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:07,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:07,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:04:07,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:04:07,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:04:07,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:07,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:07,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:04:07,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:04:07,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:04:07,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:04:07,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 08:04:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:07,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:07,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:07,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:07,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 08:04:07,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:04:07,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-25 08:04:07,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:07,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:07,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:04:07,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:04:07,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 08:04:07,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:04:07,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:04:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:07,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:07,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:07,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:04:07,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:04:07,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:04:07,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:07,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:07,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:04:07,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:04:07,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:04:07,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:04:07,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-25 08:04:07,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:07,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:07,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:07,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:04:07,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:04:07,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:04:07,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:07,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:07,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:04:07,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:04:07,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:04:07,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:04:07,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 08:04:07,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:07,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:07,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:07,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 08:04:07,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:04:07,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 08:04:07,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:07,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:07,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:04:07,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-25 08:04:07,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:04:07,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:04:07,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:04:07,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:07,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:07,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:07,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:04:07,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:04:07,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:04:07,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:07,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:07,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:04:07,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:04:07,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:04:07,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:04:07,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:04:07,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:07,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:07,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:07,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:04:07,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:04:07,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:04:07,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:07,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:07,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:04:07,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:04:07,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:04:07,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:04:07,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-09-25 08:04:07,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:07,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:07,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:07,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:04:07,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:04:07,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:04:07,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:07,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:07,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:04:07,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 08:04:07,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:04:07,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:04:07,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 08:04:07,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:07,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:07,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:07,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 08:04:07,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:04:07,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:04:07,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:07,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:07,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:04:07,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 08:04:07,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:04:07,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:04:07,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-09-25 08:04:07,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:07,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:07,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:07,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 08:04:07,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:04:07,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 08:04:07,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:07,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:07,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:04:07,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 08:04:07,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:04:07,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:04:07,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:04:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:07,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:07,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:07,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:04:07,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:04:07,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:04:07,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:07,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:07,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:04:07,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:04:07,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:04:07,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:04:07,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 08:04:07,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:07,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:07,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:07,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:04:07,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:04:07,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:04:07,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:07,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:07,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:04:07,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:04:07,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:04:07,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:04:08,006 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-09-25 08:04:08,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281684376] [2020-09-25 08:04:08,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:04:08,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 08:04:08,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960233311] [2020-09-25 08:04:08,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 08:04:08,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:04:08,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 08:04:08,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-09-25 08:04:08,010 INFO L87 Difference]: Start difference. First operand 199 states and 225 transitions. Second operand 12 states. [2020-09-25 08:04:09,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:04:09,303 INFO L93 Difference]: Finished difference Result 375 states and 425 transitions. [2020-09-25 08:04:09,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 08:04:09,305 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 156 [2020-09-25 08:04:09,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:04:09,308 INFO L225 Difference]: With dead ends: 375 [2020-09-25 08:04:09,308 INFO L226 Difference]: Without dead ends: 207 [2020-09-25 08:04:09,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-09-25 08:04:09,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-09-25 08:04:09,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 198. [2020-09-25 08:04:09,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-09-25 08:04:09,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 223 transitions. [2020-09-25 08:04:09,322 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 223 transitions. Word has length 156 [2020-09-25 08:04:09,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:04:09,322 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 223 transitions. [2020-09-25 08:04:09,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 08:04:09,323 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 223 transitions. [2020-09-25 08:04:09,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 08:04:09,324 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:04:09,325 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 08:04:09,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 08:04:09,325 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:04:09,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:04:09,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1025407455, now seen corresponding path program 1 times [2020-09-25 08:04:09,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:04:09,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750059404] [2020-09-25 08:04:09,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:04:09,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 08:04:09,371 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 08:04:09,371 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 08:04:09,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 08:04:09,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 08:04:09 BoogieIcfgContainer [2020-09-25 08:04:09,404 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 08:04:09,411 INFO L168 Benchmark]: Toolchain (without parser) took 27145.64 ms. Allocated memory was 148.9 MB in the beginning and 407.4 MB in the end (delta: 258.5 MB). Free memory was 104.6 MB in the beginning and 230.6 MB in the end (delta: -125.9 MB). Peak memory consumption was 132.5 MB. Max. memory is 7.1 GB. [2020-09-25 08:04:09,413 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 148.9 MB. Free memory was 123.5 MB in the beginning and 123.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-25 08:04:09,416 INFO L168 Benchmark]: CACSL2BoogieTranslator took 504.04 ms. Allocated memory was 148.9 MB in the beginning and 206.0 MB in the end (delta: 57.1 MB). Free memory was 104.0 MB in the beginning and 182.2 MB in the end (delta: -78.3 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-09-25 08:04:09,417 INFO L168 Benchmark]: Boogie Preprocessor took 61.43 ms. Allocated memory is still 206.0 MB. Free memory was 182.2 MB in the beginning and 179.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-09-25 08:04:09,417 INFO L168 Benchmark]: RCFGBuilder took 668.58 ms. Allocated memory is still 206.0 MB. Free memory was 179.7 MB in the beginning and 136.7 MB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 7.1 GB. [2020-09-25 08:04:09,421 INFO L168 Benchmark]: TraceAbstraction took 25899.83 ms. Allocated memory was 206.0 MB in the beginning and 407.4 MB in the end (delta: 201.3 MB). Free memory was 136.1 MB in the beginning and 230.6 MB in the end (delta: -94.5 MB). Peak memory consumption was 106.8 MB. Max. memory is 7.1 GB. [2020-09-25 08:04:09,425 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 148.9 MB. Free memory was 123.5 MB in the beginning and 123.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 504.04 ms. Allocated memory was 148.9 MB in the beginning and 206.0 MB in the end (delta: 57.1 MB). Free memory was 104.0 MB in the beginning and 182.2 MB in the end (delta: -78.3 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 61.43 ms. Allocated memory is still 206.0 MB. Free memory was 182.2 MB in the beginning and 179.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 668.58 ms. Allocated memory is still 206.0 MB. Free memory was 179.7 MB in the beginning and 136.7 MB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 25899.83 ms. Allocated memory was 206.0 MB in the beginning and 407.4 MB in the end (delta: 201.3 MB). Free memory was 136.1 MB in the beginning and 230.6 MB in the end (delta: -94.5 MB). Peak memory consumption was 106.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 14]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L103] CALL, EXPR nondet_tree() [L23] COND FALSE !(__VERIFIER_nondet_bool()) [L26] struct node *n = (struct node *)malloc(sizeof(struct node)); [L27] n->data = __VERIFIER_nondet_int() [L28] CALL, EXPR nondet_tree() [L23] COND TRUE __VERIFIER_nondet_bool() [L24] return 0; [L28] RET, EXPR nondet_tree() [L28] n->left = nondet_tree() [L29] CALL, EXPR nondet_tree() [L23] COND TRUE __VERIFIER_nondet_bool() [L24] return 0; [L29] RET, EXPR nondet_tree() [L29] n->right = nondet_tree() [L30] return n; [L103] RET, EXPR nondet_tree() [L103] CALL task(nondet_tree()) [L81] CALL, EXPR min(t) [L35] COND FALSE !(!n) [L38] EXPR n->left [L38] CALL, EXPR min(n->left) [L35] COND TRUE !n [L36] return 2147483647; [L38] RET, EXPR min(n->left) [L38] int a = min(n->left); [L39] EXPR n->right [L39] CALL, EXPR min(n->right) [L35] COND TRUE !n [L36] return 2147483647; [L39] RET, EXPR min(n->right) [L39] int b = min(n->right); [L40] COND TRUE a <= b [L40] return a; [L81] RET, EXPR min(t) [L81] int a = min(t); [L82] int b; [L84] CALL, EXPR size(t) [L76] COND FALSE !(!t) [L77] EXPR t->left [L77] CALL, EXPR size(t->left) [L76] COND TRUE !t [L76] return 0; [L77] RET, EXPR size(t->left) [L77] EXPR t->right [L77] CALL, EXPR size(t->right) [L76] COND TRUE !t [L76] return 0; [L77] RET, EXPR size(t->right) [L77] return size(t->left) + size(t->right) + 1; [L84] RET, EXPR size(t) [L84] int n = size(t); [L85] CALL assume_abort_if_not(n != 0) [L10] COND FALSE !(!cond) [L85] RET assume_abort_if_not(n != 0) [L86] EXPR, FCALL calloc(n, sizeof(int)) [L86] int *x = calloc(n, sizeof(int)); [L87] CALL tree_inorder(t, x, n) [L65] COND FALSE !(!t) [L68] EXPR t->left [L68] CALL, EXPR tree_inorder(t->left, a, i) [L65] COND TRUE !t [L66] return i; [L68] RET, EXPR tree_inorder(t->left, a, i) [L68] i = tree_inorder(t->left, a, i) [L69] EXPR i++ [L69] EXPR t->data [L69] a[i++] = t->data [L70] EXPR t->right [L70] CALL, EXPR tree_inorder(t->right, a, i) [L65] COND TRUE !t [L66] return i; [L70] RET, EXPR tree_inorder(t->right, a, i) [L70] i = tree_inorder(t->right, a, i) [L71] return i; [L87] RET tree_inorder(t, x, n) [L88] EXPR x[0] [L88] CALL __VERIFIER_assert(a == x[0]) [L14] COND TRUE !cond [L14] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 199 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 25.7s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 6.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 871 SDtfs, 1760 SDslu, 2299 SDs, 0 SdLazy, 4407 SolverSat, 585 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 192 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=199occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 53 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 18.7s InterpolantComputationTime, 697 NumberOfCodeBlocks, 697 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 536 ConstructedInterpolants, 0 QuantifiedInterpolants, 200435 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 128/144 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...