/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test22-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:27:24,704 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:27:24,709 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:27:24,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:27:24,756 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:27:24,764 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:27:24,766 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:27:24,770 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:27:24,773 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:27:24,776 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:27:24,777 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:27:24,778 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:27:24,779 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:27:24,782 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:27:24,784 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:27:24,786 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:27:24,788 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:27:24,790 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:27:24,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:27:24,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:27:24,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:27:24,803 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:27:24,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:27:24,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:27:24,823 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:27:24,823 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:27:24,823 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:27:24,827 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:27:24,828 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:27:24,829 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:27:24,829 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:27:24,830 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:27:24,831 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:27:24,835 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:27:24,836 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:27:24,836 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:27:24,838 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:27:24,838 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:27:24,839 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:27:24,840 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:27:24,840 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:27:24,841 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 13:27:24,876 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:27:24,877 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:27:24,878 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:27:24,878 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:27:24,879 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:27:24,879 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:27:24,879 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:27:24,879 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:27:24,880 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:27:24,880 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:27:24,880 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:27:24,880 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:27:24,880 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:27:24,881 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:27:24,881 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:27:24,881 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:27:24,881 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:27:24,881 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:27:24,882 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:27:24,882 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:27:24,882 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:27:24,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:27:24,882 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:27:24,883 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:27:24,883 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:27:24,883 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:27:24,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:27:24,884 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:27:24,884 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:27:24,884 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:27:25,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:27:25,357 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:27:25,362 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:27:25,364 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:27:25,364 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:27:25,365 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test22-2.c [2020-09-25 13:27:25,464 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/92ece0b4d/1c5fdffafd0b4aec826c92923b5d18f5/FLAGa571f2de8 [2020-09-25 13:27:26,035 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:27:26,036 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test22-2.c [2020-09-25 13:27:26,046 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/92ece0b4d/1c5fdffafd0b4aec826c92923b5d18f5/FLAGa571f2de8 [2020-09-25 13:27:26,374 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/92ece0b4d/1c5fdffafd0b4aec826c92923b5d18f5 [2020-09-25 13:27:26,388 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:27:26,394 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:27:26,396 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:27:26,396 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:27:26,400 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:27:26,402 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:27:26" (1/1) ... [2020-09-25 13:27:26,406 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70996f09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:27:26, skipping insertion in model container [2020-09-25 13:27:26,406 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:27:26" (1/1) ... [2020-09-25 13:27:26,416 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:27:26,447 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:27:26,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:27:26,713 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:27:26,733 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:27:26,753 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:27:26,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:27:26 WrapperNode [2020-09-25 13:27:26,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:27:26,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:27:26,755 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:27:26,755 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:27:26,853 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:27:26" (1/1) ... [2020-09-25 13:27:26,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:27:26" (1/1) ... [2020-09-25 13:27:26,865 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:27:26" (1/1) ... [2020-09-25 13:27:26,866 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:27:26" (1/1) ... [2020-09-25 13:27:26,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:27:26" (1/1) ... [2020-09-25 13:27:26,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:27:26" (1/1) ... [2020-09-25 13:27:26,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:27:26" (1/1) ... [2020-09-25 13:27:26,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:27:26,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:27:26,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:27:26,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:27:26,890 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:27:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:27:26,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:27:26,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:27:26,970 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-09-25 13:27:26,970 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2020-09-25 13:27:26,970 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-09-25 13:27:26,970 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:27:26,971 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:27:26,971 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:27:26,971 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 13:27:26,971 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 13:27:26,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 13:27:26,972 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2020-09-25 13:27:26,972 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 13:27:26,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 13:27:26,972 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:27:26,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:27:26,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 13:27:26,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 13:27:26,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:27:26,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 13:27:27,363 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:27:27,364 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:27:27,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:27:27 BoogieIcfgContainer [2020-09-25 13:27:27,370 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:27:27,372 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:27:27,372 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:27:27,376 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:27:27,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:27:26" (1/3) ... [2020-09-25 13:27:27,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8a69a0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:27:27, skipping insertion in model container [2020-09-25 13:27:27,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:27:26" (2/3) ... [2020-09-25 13:27:27,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8a69a0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:27:27, skipping insertion in model container [2020-09-25 13:27:27,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:27:27" (3/3) ... [2020-09-25 13:27:27,383 INFO L109 eAbstractionObserver]: Analyzing ICFG test22-2.c [2020-09-25 13:27:27,396 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:27:27,406 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:27:27,428 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:27:27,461 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:27:27,461 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:27:27,461 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:27:27,461 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:27:27,461 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:27:27,462 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:27:27,462 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:27:27,462 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:27:27,485 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-09-25 13:27:27,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-25 13:27:27,495 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:27:27,496 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:27:27,497 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:27:27,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:27:27,504 INFO L82 PathProgramCache]: Analyzing trace with hash 2026025413, now seen corresponding path program 1 times [2020-09-25 13:27:27,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:27:27,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46443399] [2020-09-25 13:27:27,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:27:27,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:27,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:27,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:28,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:29,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:29,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 13:27:29,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:27:29,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1761 [2020-09-25 13:27:29,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:29,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:29,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 13:27:29,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 13:27:29,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 13:27:29,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:27:29,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:27:29,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:29,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:29,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:29,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 13:27:29,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:27:29,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 13:27:29,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:29,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:29,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:27:29,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:27:29,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 13:27:29,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:27:29,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-25 13:27:29,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:29,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:29,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:29,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 13:27:29,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:27:29,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:27:29,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:29,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:29,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:27:29,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:27:29,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 13:27:29,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:27:29,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:27:29,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:29,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:29,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:29,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:27:29,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:27:29,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 13:27:29,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:29,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:29,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:27:29,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:27:29,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:27:29,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:27:29,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-25 13:27:29,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:29,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:29,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:29,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:27:29,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:27:29,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 13:27:29,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:29,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:29,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:27:29,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:27:29,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:27:29,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:27:29,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 13:27:29,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:29,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:29,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:29,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:27:29,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:27:29,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:27:29,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:29,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:29,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:27:29,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:27:29,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:27:29,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:27:29,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-25 13:27:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:29,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:29,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:29,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:27:29,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:27:29,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:27:29,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:29,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:29,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:27:29,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 13:27:29,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:27:29,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:27:30,017 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 13:27:30,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [46443399] [2020-09-25 13:27:30,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:27:30,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 13:27:30,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112530904] [2020-09-25 13:27:30,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 13:27:30,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:27:30,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 13:27:30,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:27:30,051 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 12 states. [2020-09-25 13:27:32,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:27:32,306 INFO L93 Difference]: Finished difference Result 207 states and 237 transitions. [2020-09-25 13:27:32,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 13:27:32,308 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 83 [2020-09-25 13:27:32,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:27:32,325 INFO L225 Difference]: With dead ends: 207 [2020-09-25 13:27:32,325 INFO L226 Difference]: Without dead ends: 151 [2020-09-25 13:27:32,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=151, Invalid=605, Unknown=0, NotChecked=0, Total=756 [2020-09-25 13:27:32,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-09-25 13:27:32,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 97. [2020-09-25 13:27:32,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-09-25 13:27:32,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 107 transitions. [2020-09-25 13:27:32,425 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 107 transitions. Word has length 83 [2020-09-25 13:27:32,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:27:32,426 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 107 transitions. [2020-09-25 13:27:32,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 13:27:32,427 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 107 transitions. [2020-09-25 13:27:32,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 13:27:32,437 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:27:32,437 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-25 13:27:32,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:27:32,438 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:27:32,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:27:32,439 INFO L82 PathProgramCache]: Analyzing trace with hash 114916730, now seen corresponding path program 1 times [2020-09-25 13:27:32,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:27:32,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106601692] [2020-09-25 13:27:32,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:27:32,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:32,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:32,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:33,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:37,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:37,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-25 13:27:37,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:27:37,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 13:27:37,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:37,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:37,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 13:27:37,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 13:27:37,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 13:27:37,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:27:37,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:27:37,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:37,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:37,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:37,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 13:27:37,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:27:37,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 13:27:37,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:37,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:37,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:27:37,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:27:37,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:27:37,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:27:37,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-25 13:27:37,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:37,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:37,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:37,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 13:27:37,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:27:37,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:27:37,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:37,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:37,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:27:37,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:27:37,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 13:27:37,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:27:37,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:27:37,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:37,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:37,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:37,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:27:37,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:27:37,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 13:27:37,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:37,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:37,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:27:37,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:27:37,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:27:37,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:27:37,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-25 13:27:37,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:37,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:37,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:37,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:27:37,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:27:37,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:27:37,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:37,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:37,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:27:37,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:27:37,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:27:37,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:27:37,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 13:27:37,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:37,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:37,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:37,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:27:37,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:27:37,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:27:37,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:37,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:37,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:27:37,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:27:37,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:27:37,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:27:37,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-25 13:27:37,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:37,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:37,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:37,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:27:37,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:27:37,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:27:37,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:37,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:37,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:27:37,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 13:27:37,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:27:37,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 13:27:37,856 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 13:27:37,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106601692] [2020-09-25 13:27:37,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:27:37,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 13:27:37,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780958215] [2020-09-25 13:27:37,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 13:27:37,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:27:37,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 13:27:37,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-09-25 13:27:37,861 INFO L87 Difference]: Start difference. First operand 97 states and 107 transitions. Second operand 15 states. [2020-09-25 13:27:39,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:27:39,718 INFO L93 Difference]: Finished difference Result 160 states and 174 transitions. [2020-09-25 13:27:39,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 13:27:39,719 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 85 [2020-09-25 13:27:39,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:27:39,722 INFO L225 Difference]: With dead ends: 160 [2020-09-25 13:27:39,723 INFO L226 Difference]: Without dead ends: 119 [2020-09-25 13:27:39,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=228, Invalid=962, Unknown=0, NotChecked=0, Total=1190 [2020-09-25 13:27:39,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-09-25 13:27:39,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 87. [2020-09-25 13:27:39,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-25 13:27:39,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 93 transitions. [2020-09-25 13:27:39,744 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 93 transitions. Word has length 85 [2020-09-25 13:27:39,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:27:39,745 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 93 transitions. [2020-09-25 13:27:39,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 13:27:39,745 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 93 transitions. [2020-09-25 13:27:39,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 13:27:39,749 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:27:39,749 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:27:39,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:27:39,749 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:27:39,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:27:39,750 INFO L82 PathProgramCache]: Analyzing trace with hash 679818391, now seen corresponding path program 1 times [2020-09-25 13:27:39,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:27:39,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466650522] [2020-09-25 13:27:39,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:27:39,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:39,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:39,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:43,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:43,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 13:27:43,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:27:43,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3472 [2020-09-25 13:27:43,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:43,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:43,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 13:27:43,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 13:27:43,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 13:27:43,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:27:43,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:27:43,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:43,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:43,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:43,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 13:27:43,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:27:43,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:27:43,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:43,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:43,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:27:43,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:27:43,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:27:43,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:27:43,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-25 13:27:43,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:43,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:43,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:43,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 13:27:43,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:27:43,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:27:43,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:43,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:43,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:27:43,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:27:43,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:27:43,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:27:43,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:27:43,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:43,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:43,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:43,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:27:43,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:27:43,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 13:27:43,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:43,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:43,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:27:43,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:27:43,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:27:43,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:27:43,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-25 13:27:43,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:43,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:43,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:43,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:27:43,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:27:43,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:27:43,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:43,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:43,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:27:43,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:27:43,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:27:43,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:27:43,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 13:27:43,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:43,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:43,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:43,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:27:43,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:27:43,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 13:27:43,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:43,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:43,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:27:43,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:27:43,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:27:43,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:27:43,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-25 13:27:43,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:43,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:43,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:43,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:27:43,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:27:43,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:27:43,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:43,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:43,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:27:43,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 13:27:43,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:27:43,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:27:43,612 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 13:27:43,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466650522] [2020-09-25 13:27:43,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:27:43,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 13:27:43,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985444507] [2020-09-25 13:27:43,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 13:27:43,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:27:43,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 13:27:43,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-09-25 13:27:43,615 INFO L87 Difference]: Start difference. First operand 87 states and 93 transitions. Second operand 14 states. [2020-09-25 13:27:45,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:27:45,288 INFO L93 Difference]: Finished difference Result 167 states and 177 transitions. [2020-09-25 13:27:45,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 13:27:45,288 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 87 [2020-09-25 13:27:45,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:27:45,290 INFO L225 Difference]: With dead ends: 167 [2020-09-25 13:27:45,291 INFO L226 Difference]: Without dead ends: 153 [2020-09-25 13:27:45,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=139, Invalid=673, Unknown=0, NotChecked=0, Total=812 [2020-09-25 13:27:45,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-09-25 13:27:45,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 108. [2020-09-25 13:27:45,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-09-25 13:27:45,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 116 transitions. [2020-09-25 13:27:45,323 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 116 transitions. Word has length 87 [2020-09-25 13:27:45,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:27:45,323 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 116 transitions. [2020-09-25 13:27:45,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 13:27:45,324 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 116 transitions. [2020-09-25 13:27:45,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 13:27:45,327 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:27:45,328 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1] [2020-09-25 13:27:45,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:27:45,330 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:27:45,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:27:45,330 INFO L82 PathProgramCache]: Analyzing trace with hash -2022406921, now seen corresponding path program 1 times [2020-09-25 13:27:45,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:27:45,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668767426] [2020-09-25 13:27:45,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:27:45,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 13:27:45,355 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 13:27:45,356 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 13:27:45,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:27:45,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:27:45 BoogieIcfgContainer [2020-09-25 13:27:45,385 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 13:27:45,389 INFO L168 Benchmark]: Toolchain (without parser) took 18997.92 ms. Allocated memory was 138.4 MB in the beginning and 374.3 MB in the end (delta: 235.9 MB). Free memory was 101.6 MB in the beginning and 197.8 MB in the end (delta: -96.2 MB). Peak memory consumption was 139.7 MB. Max. memory is 7.1 GB. [2020-09-25 13:27:45,390 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 13:27:45,391 INFO L168 Benchmark]: CACSL2BoogieTranslator took 358.31 ms. Allocated memory is still 138.4 MB. Free memory was 100.9 MB in the beginning and 90.5 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-25 13:27:45,392 INFO L168 Benchmark]: Boogie Preprocessor took 133.81 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 90.5 MB in the beginning and 179.0 MB in the end (delta: -88.5 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-09-25 13:27:45,393 INFO L168 Benchmark]: RCFGBuilder took 481.75 ms. Allocated memory is still 201.9 MB. Free memory was 179.0 MB in the beginning and 155.8 MB in the end (delta: 23.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-09-25 13:27:45,394 INFO L168 Benchmark]: TraceAbstraction took 18014.01 ms. Allocated memory was 201.9 MB in the beginning and 374.3 MB in the end (delta: 172.5 MB). Free memory was 155.8 MB in the beginning and 197.8 MB in the end (delta: -42.0 MB). Peak memory consumption was 130.5 MB. Max. memory is 7.1 GB. [2020-09-25 13:27:45,398 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 358.31 ms. Allocated memory is still 138.4 MB. Free memory was 100.9 MB in the beginning and 90.5 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.81 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 90.5 MB in the beginning and 179.0 MB in the end (delta: -88.5 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 481.75 ms. Allocated memory is still 201.9 MB. Free memory was 179.0 MB in the beginning and 155.8 MB in the end (delta: 23.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 18014.01 ms. Allocated memory was 201.9 MB in the beginning and 374.3 MB in the end (delta: 172.5 MB). Free memory was 155.8 MB in the beginning and 197.8 MB in the end (delta: -42.0 MB). Peak memory consumption was 130.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 48]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] struct dummy d1, d2; [L32] CALL init() [L13] d1.a = __VERIFIER_nondet_int() [L14] d1.b = __VERIFIER_nondet_int() [L16] d2.a = __VERIFIER_nondet_int() [L17] d2.b = __VERIFIER_nondet_int() [L32] RET init() [L33] CALL, EXPR get_dummy() [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] RET, EXPR get_dummy() [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L33] CALL, EXPR get_dummy() [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] RET, EXPR get_dummy() [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L33] CALL, EXPR get_dummy() [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] RET, EXPR get_dummy() [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L34] int i = __VERIFIER_nondet_int(); [L35] pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L35] EXPR (*pd2).a [L35] pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L35] COND TRUE pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L36] int *pa = &pd1->a; [L37] EXPR pd3->a [L37] i = pd3->a - 10 [L38] EXPR \read(*pa) [L38] COND FALSE !(i < *pa) [L41] CALL, EXPR check(pd2, i) [L27] EXPR s1->a [L27] return s1->a == i; [L41] RET, EXPR check(pd2, i) [L41] COND TRUE !check(pd2, i) [L48] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 88 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 17.9s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 5.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 248 SDtfs, 894 SDslu, 140 SDs, 0 SdLazy, 3061 SolverSat, 194 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 131 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=3, 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, 3 MinimizatonAttempts, 131 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 11.4s InterpolantComputationTime, 342 NumberOfCodeBlocks, 342 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 252 ConstructedInterpolants, 0 QuantifiedInterpolants, 70308 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 0 PerfectInterpolantSequences, 31/61 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...