/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=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/s1iff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:28:48,941 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:28:48,945 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:28:48,992 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:28:48,993 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:28:49,002 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:28:49,004 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:28:49,008 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:28:49,011 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:28:49,014 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:28:49,015 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:28:49,016 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:28:49,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:28:49,019 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:28:49,022 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:28:49,023 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:28:49,027 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:28:49,028 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:28:49,030 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:28:49,031 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:28:49,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:28:49,034 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:28:49,035 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:28:49,036 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:28:49,038 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:28:49,038 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:28:49,039 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:28:49,040 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:28:49,040 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:28:49,041 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:28:49,041 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:28:49,042 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:28:49,043 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:28:49,044 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:28:49,045 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:28:49,045 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:28:49,046 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:28:49,046 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:28:49,046 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:28:49,047 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:28:49,048 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:28:49,049 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 [2020-09-24 18:28:49,075 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:28:49,075 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:28:49,076 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:28:49,077 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:28:49,077 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:28:49,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:28:49,077 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:28:49,078 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:28:49,078 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:28:49,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:28:49,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:28:49,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:28:49,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:28:49,079 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:28:49,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:28:49,079 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:28:49,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:28:49,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:28:49,080 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:28:49,080 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:28:49,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:28:49,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:28:49,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:28:49,081 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:28:49,081 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:28:49,082 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:28:49,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:28:49,082 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:28:49,082 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:28:49,083 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:28:49,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:28:49,646 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:28:49,653 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:28:49,655 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:28:49,657 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:28:49,658 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s1iff.c [2020-09-24 18:28:49,738 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b7f4613c0/dfa0208c794e48a3aabd0d5826056001/FLAGa9cf99b2d [2020-09-24 18:28:50,257 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:28:50,258 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s1iff.c [2020-09-24 18:28:50,265 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b7f4613c0/dfa0208c794e48a3aabd0d5826056001/FLAGa9cf99b2d [2020-09-24 18:28:50,606 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b7f4613c0/dfa0208c794e48a3aabd0d5826056001 [2020-09-24 18:28:50,622 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:28:50,628 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:28:50,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:28:50,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:28:50,634 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:28:50,635 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:28:50" (1/1) ... [2020-09-24 18:28:50,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a7ae4f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:50, skipping insertion in model container [2020-09-24 18:28:50,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:28:50" (1/1) ... [2020-09-24 18:28:50,649 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:28:50,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:28:50,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:28:50,945 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:28:50,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:28:51,093 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:28:51,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:51 WrapperNode [2020-09-24 18:28:51,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:28:51,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:28:51,095 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:28:51,095 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:28:51,110 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:51" (1/1) ... [2020-09-24 18:28:51,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:51" (1/1) ... [2020-09-24 18:28:51,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:51" (1/1) ... [2020-09-24 18:28:51,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:51" (1/1) ... [2020-09-24 18:28:51,141 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:51" (1/1) ... [2020-09-24 18:28:51,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:51" (1/1) ... [2020-09-24 18:28:51,150 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:51" (1/1) ... [2020-09-24 18:28:51,154 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:28:51,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:28:51,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:28:51,155 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:28:51,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:51" (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 [2020-09-24 18:28:51,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:28:51,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:28:51,239 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 18:28:51,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 18:28:51,239 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:28:51,239 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:28:51,240 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 18:28:51,240 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 18:28:51,240 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 18:28:51,240 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:28:51,240 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 18:28:51,241 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:28:51,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 18:28:51,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 18:28:51,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 18:28:51,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 18:28:51,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 18:28:51,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:28:51,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:28:51,564 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:28:51,565 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 18:28:51,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:28:51 BoogieIcfgContainer [2020-09-24 18:28:51,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:28:51,574 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:28:51,574 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:28:51,579 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:28:51,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:28:50" (1/3) ... [2020-09-24 18:28:51,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb70842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:28:51, skipping insertion in model container [2020-09-24 18:28:51,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:51" (2/3) ... [2020-09-24 18:28:51,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb70842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:28:51, skipping insertion in model container [2020-09-24 18:28:51,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:28:51" (3/3) ... [2020-09-24 18:28:51,585 INFO L109 eAbstractionObserver]: Analyzing ICFG s1iff.c [2020-09-24 18:28:51,602 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:28:51,615 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:28:51,643 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:28:51,688 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:28:51,688 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:28:51,688 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:28:51,688 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:28:51,689 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:28:51,689 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:28:51,689 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:28:51,689 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:28:51,728 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-09-24 18:28:51,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-24 18:28:51,739 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:28:51,741 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:28:51,741 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:28:51,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:28:51,750 INFO L82 PathProgramCache]: Analyzing trace with hash 171473808, now seen corresponding path program 1 times [2020-09-24 18:28:51,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:28:51,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563935167] [2020-09-24 18:28:51,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:28:51,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:51,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:52,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:52,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:52,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 18:28:52,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:28:52,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-09-24 18:28:52,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:52,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:52,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-24 18:28:52,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:52,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:28:52,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:28:52,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:52,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:52,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:52,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:28:52,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:52,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:28:52,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:52,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:52,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:52,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:52,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:28:52,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 18:28:52,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:52,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:52,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:52,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:28:52,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:52,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:28:52,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:52,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:52,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:52,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:52,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:28:52,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:28:52,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [563935167] [2020-09-24 18:28:52,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:28:52,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 18:28:52,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070984617] [2020-09-24 18:28:52,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 18:28:52,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:28:52,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 18:28:52,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 18:28:52,382 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2020-09-24 18:28:52,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:28:52,544 INFO L93 Difference]: Finished difference Result 113 states and 126 transitions. [2020-09-24 18:28:52,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 18:28:52,546 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-09-24 18:28:52,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:28:52,558 INFO L225 Difference]: With dead ends: 113 [2020-09-24 18:28:52,558 INFO L226 Difference]: Without dead ends: 53 [2020-09-24 18:28:52,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 18:28:52,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-24 18:28:52,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-24 18:28:52,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-24 18:28:52,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-09-24 18:28:52,619 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 31 [2020-09-24 18:28:52,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:28:52,619 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-09-24 18:28:52,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 18:28:52,620 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-09-24 18:28:52,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-24 18:28:52,621 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:28:52,621 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] [2020-09-24 18:28:52,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:28:52,622 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:28:52,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:28:52,623 INFO L82 PathProgramCache]: Analyzing trace with hash 921692051, now seen corresponding path program 1 times [2020-09-24 18:28:52,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:28:52,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [672613417] [2020-09-24 18:28:52,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:28:52,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:52,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:52,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:53,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:53,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 18:28:53,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:28:53,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 437 [2020-09-24 18:28:53,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:53,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:28:53,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 18:28:53,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 18:28:53,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:28:53,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:28:53,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:53,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:53,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:53,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:28:53,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:53,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:28:53,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:53,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:53,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:53,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:53,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:28:53,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 18:28:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:53,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:53,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:53,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:28:53,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:53,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 18:28:53,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:53,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:28:53,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:53,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:28:53,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:28:53,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:28:53,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [672613417] [2020-09-24 18:28:53,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:28:53,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:28:53,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848656484] [2020-09-24 18:28:53,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:28:53,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:28:53,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:28:53,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:28:53,234 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 5 states. [2020-09-24 18:28:53,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:28:53,406 INFO L93 Difference]: Finished difference Result 80 states and 85 transitions. [2020-09-24 18:28:53,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:28:53,407 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-09-24 18:28:53,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:28:53,409 INFO L225 Difference]: With dead ends: 80 [2020-09-24 18:28:53,409 INFO L226 Difference]: Without dead ends: 55 [2020-09-24 18:28:53,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:28:53,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-24 18:28:53,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-24 18:28:53,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-24 18:28:53,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2020-09-24 18:28:53,422 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 31 [2020-09-24 18:28:53,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:28:53,422 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2020-09-24 18:28:53,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:28:53,423 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2020-09-24 18:28:53,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 18:28:53,424 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:28:53,425 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] [2020-09-24 18:28:53,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:28:53,425 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:28:53,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:28:53,426 INFO L82 PathProgramCache]: Analyzing trace with hash -827220298, now seen corresponding path program 1 times [2020-09-24 18:28:53,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:28:53,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913147985] [2020-09-24 18:28:53,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:28:53,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:53,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:53,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:53,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:54,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:54,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:55,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:56,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:56,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:56,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:56,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:57,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:57,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:58,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:58,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:58,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 18:28:58,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-24 18:28:58,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-24 18:28:58,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:58,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 18:28:58,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 18:28:58,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-24 18:28:58,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:28:59,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:28:59,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:59,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:59,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:59,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:28:59,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:59,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:28:59,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:59,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:59,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:59,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:59,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 25 [2020-09-24 18:28:59,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 18:28:59,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:59,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:59,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:59,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:28:59,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:59,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:28:59,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:59,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:28:59,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:59,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:28:59,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:28:59,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:28:59,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [913147985] [2020-09-24 18:28:59,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:28:59,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 18:28:59,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332549223] [2020-09-24 18:28:59,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 18:28:59,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:28:59,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 18:28:59,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2020-09-24 18:28:59,278 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 17 states. [2020-09-24 18:29:00,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:29:00,570 INFO L93 Difference]: Finished difference Result 84 states and 87 transitions. [2020-09-24 18:29:00,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 18:29:00,573 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 48 [2020-09-24 18:29:00,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:29:00,575 INFO L225 Difference]: With dead ends: 84 [2020-09-24 18:29:00,575 INFO L226 Difference]: Without dead ends: 78 [2020-09-24 18:29:00,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=170, Invalid=822, Unknown=0, NotChecked=0, Total=992 [2020-09-24 18:29:00,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-24 18:29:00,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 67. [2020-09-24 18:29:00,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-24 18:29:00,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2020-09-24 18:29:00,588 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 48 [2020-09-24 18:29:00,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:29:00,589 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2020-09-24 18:29:00,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 18:29:00,589 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2020-09-24 18:29:00,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 18:29:00,591 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:29:00,591 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] [2020-09-24 18:29:00,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:29:00,591 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:29:00,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:29:00,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1272927570, now seen corresponding path program 1 times [2020-09-24 18:29:00,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:29:00,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132556341] [2020-09-24 18:29:00,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:29:00,608 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-24 18:29:00,609 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-24 18:29:00,609 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 18:29:00,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:29:00,636 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-24 18:29:00,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 06:29:00 BoogieIcfgContainer [2020-09-24 18:29:00,636 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 18:29:00,640 INFO L168 Benchmark]: Toolchain (without parser) took 10015.01 ms. Allocated memory was 147.3 MB in the beginning and 275.3 MB in the end (delta: 127.9 MB). Free memory was 103.5 MB in the beginning and 110.6 MB in the end (delta: -7.0 MB). Peak memory consumption was 120.9 MB. Max. memory is 7.1 GB. [2020-09-24 18:29:00,641 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 18:29:00,642 INFO L168 Benchmark]: CACSL2BoogieTranslator took 465.85 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 102.9 MB in the beginning and 182.8 MB in the end (delta: -79.9 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. [2020-09-24 18:29:00,643 INFO L168 Benchmark]: Boogie Preprocessor took 58.81 ms. Allocated memory is still 203.9 MB. Free memory was 182.8 MB in the beginning and 180.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-09-24 18:29:00,644 INFO L168 Benchmark]: RCFGBuilder took 418.78 ms. Allocated memory is still 203.9 MB. Free memory was 180.5 MB in the beginning and 160.9 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. [2020-09-24 18:29:00,646 INFO L168 Benchmark]: TraceAbstraction took 9062.23 ms. Allocated memory was 203.9 MB in the beginning and 275.3 MB in the end (delta: 71.3 MB). Free memory was 160.2 MB in the beginning and 110.6 MB in the end (delta: 49.7 MB). Peak memory consumption was 121.0 MB. Max. memory is 7.1 GB. [2020-09-24 18:29:00,650 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 465.85 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 102.9 MB in the beginning and 182.8 MB in the end (delta: -79.9 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.81 ms. Allocated memory is still 203.9 MB. Free memory was 182.8 MB in the beginning and 180.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 418.78 ms. Allocated memory is still 203.9 MB. Free memory was 180.5 MB in the beginning and 160.9 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9062.23 ms. Allocated memory was 203.9 MB in the beginning and 275.3 MB in the end (delta: 71.3 MB). Free memory was 160.2 MB in the beginning and 110.6 MB in the end (delta: 49.7 MB). Peak memory consumption was 121.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 1 [L30] i=0 [L30] COND TRUE i