/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/s5if.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 23:55:14,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 23:55:14,266 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 23:55:14,312 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 23:55:14,312 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 23:55:14,325 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 23:55:14,327 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 23:55:14,330 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 23:55:14,334 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 23:55:14,338 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 23:55:14,339 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 23:55:14,340 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 23:55:14,340 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 23:55:14,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 23:55:14,347 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 23:55:14,349 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 23:55:14,351 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 23:55:14,352 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 23:55:14,354 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 23:55:14,364 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 23:55:14,367 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 23:55:14,368 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 23:55:14,369 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 23:55:14,370 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 23:55:14,373 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 23:55:14,374 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 23:55:14,374 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 23:55:14,377 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 23:55:14,378 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 23:55:14,381 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 23:55:14,381 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 23:55:14,382 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 23:55:14,383 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 23:55:14,383 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 23:55:14,385 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 23:55:14,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 23:55:14,386 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 23:55:14,387 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 23:55:14,387 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 23:55:14,388 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 23:55:14,390 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 23:55:14,391 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 [2020-10-13 23:55:14,437 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 23:55:14,437 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 23:55:14,440 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 23:55:14,440 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 23:55:14,440 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 23:55:14,441 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 23:55:14,441 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 23:55:14,441 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 23:55:14,441 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 23:55:14,441 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 23:55:14,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 23:55:14,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 23:55:14,443 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 23:55:14,444 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 23:55:14,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 23:55:14,444 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 23:55:14,444 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 23:55:14,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 23:55:14,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 23:55:14,445 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 23:55:14,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 23:55:14,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 23:55:14,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 23:55:14,446 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 23:55:14,446 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 23:55:14,446 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 23:55:14,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 23:55:14,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 23:55:14,447 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 23:55:14,447 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 -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-13 23:55:14,821 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 23:55:14,845 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 23:55:14,858 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 23:55:14,860 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 23:55:14,861 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 23:55:14,861 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s5if.c [2020-10-13 23:55:14,927 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2371e5a06/0f96eb9b2b74412f8cb86171d4732879/FLAG3a6802ad8 [2020-10-13 23:55:15,457 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 23:55:15,458 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s5if.c [2020-10-13 23:55:15,463 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2371e5a06/0f96eb9b2b74412f8cb86171d4732879/FLAG3a6802ad8 [2020-10-13 23:55:15,833 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2371e5a06/0f96eb9b2b74412f8cb86171d4732879 [2020-10-13 23:55:15,845 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 23:55:15,848 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 23:55:15,849 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 23:55:15,849 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 23:55:15,853 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 23:55:15,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:55:15" (1/1) ... [2020-10-13 23:55:15,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ecb2e31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:55:15, skipping insertion in model container [2020-10-13 23:55:15,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:55:15" (1/1) ... [2020-10-13 23:55:15,868 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 23:55:15,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 23:55:16,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:55:16,127 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 23:55:16,150 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:55:16,170 INFO L208 MainTranslator]: Completed translation [2020-10-13 23:55:16,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:55:16 WrapperNode [2020-10-13 23:55:16,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 23:55:16,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 23:55:16,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 23:55:16,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 23:55:16,272 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:55:16" (1/1) ... [2020-10-13 23:55:16,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:55:16" (1/1) ... [2020-10-13 23:55:16,281 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:55:16" (1/1) ... [2020-10-13 23:55:16,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:55:16" (1/1) ... [2020-10-13 23:55:16,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:55:16" (1/1) ... [2020-10-13 23:55:16,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:55:16" (1/1) ... [2020-10-13 23:55:16,301 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:55:16" (1/1) ... [2020-10-13 23:55:16,304 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 23:55:16,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 23:55:16,305 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 23:55:16,305 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 23:55:16,306 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:55:16" (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 [2020-10-13 23:55:16,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 23:55:16,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 23:55:16,366 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 23:55:16,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 23:55:16,366 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 23:55:16,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 23:55:16,367 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 23:55:16,367 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 23:55:16,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 23:55:16,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 23:55:16,367 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 23:55:16,368 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 23:55:16,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 23:55:16,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 23:55:16,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 23:55:16,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 23:55:16,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 23:55:16,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 23:55:16,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 23:55:16,682 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 23:55:16,683 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-13 23:55:16,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:55:16 BoogieIcfgContainer [2020-10-13 23:55:16,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 23:55:16,690 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 23:55:16,690 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 23:55:16,694 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 23:55:16,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:55:15" (1/3) ... [2020-10-13 23:55:16,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dd6002a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:55:16, skipping insertion in model container [2020-10-13 23:55:16,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:55:16" (2/3) ... [2020-10-13 23:55:16,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dd6002a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:55:16, skipping insertion in model container [2020-10-13 23:55:16,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:55:16" (3/3) ... [2020-10-13 23:55:16,699 INFO L109 eAbstractionObserver]: Analyzing ICFG s5if.c [2020-10-13 23:55:16,712 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 23:55:16,721 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 23:55:16,753 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 23:55:16,780 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 23:55:16,780 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 23:55:16,780 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 23:55:16,780 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 23:55:16,781 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 23:55:16,781 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 23:55:16,781 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 23:55:16,781 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 23:55:16,803 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-10-13 23:55:16,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-13 23:55:16,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:55:16,811 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] [2020-10-13 23:55:16,811 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:55:16,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:55:16,818 INFO L82 PathProgramCache]: Analyzing trace with hash -432131487, now seen corresponding path program 1 times [2020-10-13 23:55:16,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:55:16,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58658680] [2020-10-13 23:55:16,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:55:16,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:55:16,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:55:17,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:55:17,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:55:17,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:55:17,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 23:55:17,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:55:17,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 631 [2020-10-13 23:55:17,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:55:17,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:55:17,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:55:17,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 23:55:17,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:55:17,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 23:55:17,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:55:17,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:55:17,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:55:17,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:55:17,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:55:17,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:55:17,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 23:55:17,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:55:17,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:55:17,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:55:17,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:55:17,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:55:17,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:55:17,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 23:55:17,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:55:17,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:55:17,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:55:17,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:55:17,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:55:17,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:55:17,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:55:17,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:55:17,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:55:17,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 23:55:17,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:55:17,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:55:17,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:55:17,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58658680] [2020-10-13 23:55:17,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:55:17,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 23:55:17,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093584765] [2020-10-13 23:55:17,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 23:55:17,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:55:17,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 23:55:17,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 23:55:17,736 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-10-13 23:55:17,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:55:17,877 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2020-10-13 23:55:17,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 23:55:17,879 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-13 23:55:17,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:55:17,888 INFO L225 Difference]: With dead ends: 54 [2020-10-13 23:55:17,889 INFO L226 Difference]: Without dead ends: 25 [2020-10-13 23:55:17,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 23:55:17,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-13 23:55:17,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-10-13 23:55:17,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-13 23:55:17,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-10-13 23:55:17,935 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 21 [2020-10-13 23:55:17,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:55:17,936 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-10-13 23:55:17,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 23:55:17,936 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-10-13 23:55:17,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-13 23:55:17,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:55:17,938 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] [2020-10-13 23:55:17,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 23:55:17,939 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:55:17,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:55:17,940 INFO L82 PathProgramCache]: Analyzing trace with hash -173966049, now seen corresponding path program 1 times [2020-10-13 23:55:17,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:55:17,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1248455621] [2020-10-13 23:55:17,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:55:17,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:55:17,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:55:17,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:55:18,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:55:18,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 23:55:18,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:55:18,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-13 23:55:18,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:55:18,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:55:18,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:55:18,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:55:18,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 23:55:18,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:55:18,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:55:18,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:55:18,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:55:18,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:55:18,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:55:18,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:55:18,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 23:55:18,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:55:18,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:55:18,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:55:18,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:55:18,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:55:18,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:55:18,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 23:55:18,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:55:18,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:55:18,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:55:18,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:55:18,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:55:18,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 23:55:18,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:55:18,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:55:18,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:55:18,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:55:18,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:55:18,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 23:55:18,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:55:18,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1248455621] [2020-10-13 23:55:18,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:55:18,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 23:55:18,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510301257] [2020-10-13 23:55:18,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 23:55:18,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:55:18,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 23:55:18,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:55:18,333 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 5 states. [2020-10-13 23:55:18,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:55:18,492 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2020-10-13 23:55:18,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 23:55:18,493 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-13 23:55:18,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:55:18,494 INFO L225 Difference]: With dead ends: 37 [2020-10-13 23:55:18,494 INFO L226 Difference]: Without dead ends: 27 [2020-10-13 23:55:18,495 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 [2020-10-13 23:55:18,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-13 23:55:18,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-13 23:55:18,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-13 23:55:18,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-10-13 23:55:18,504 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 21 [2020-10-13 23:55:18,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:55:18,505 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-10-13 23:55:18,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 23:55:18,505 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-10-13 23:55:18,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-13 23:55:18,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:55:18,506 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] [2020-10-13 23:55:18,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 23:55:18,507 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:55:18,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:55:18,507 INFO L82 PathProgramCache]: Analyzing trace with hash -445719797, now seen corresponding path program 1 times [2020-10-13 23:55:18,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:55:18,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [158285507] [2020-10-13 23:55:18,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:55:18,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:55:18,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:55:18,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:55:19,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:55:19,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:55:19,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:55:19,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:55:19,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1015 [2020-10-13 23:55:19,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:55:19,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:55:19,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:55:19,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 23:55:19,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 23:55:19,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:55:19,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:55:19,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:55:19,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:55:19,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:55:19,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:55:19,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:55:19,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:55:19,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:55:19,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:55:19,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:55:19,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:55:19,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:55:19,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:55:19,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 23:55:19,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:55:19,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:55:19,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:55:19,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:55:19,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:55:19,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:55:19,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:55:19,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:55:19,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:55:19,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:55:19,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:55:19,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:55:19,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:55:19,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [158285507] [2020-10-13 23:55:19,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:55:19,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:55:19,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15334807] [2020-10-13 23:55:19,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:55:19,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:55:19,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:55:19,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:55:19,886 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 12 states. [2020-10-13 23:55:20,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:55:20,647 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2020-10-13 23:55:20,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 23:55:20,648 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 26 [2020-10-13 23:55:20,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:55:20,653 INFO L225 Difference]: With dead ends: 48 [2020-10-13 23:55:20,653 INFO L226 Difference]: Without dead ends: 42 [2020-10-13 23:55:20,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2020-10-13 23:55:20,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-13 23:55:20,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 35. [2020-10-13 23:55:20,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-13 23:55:20,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2020-10-13 23:55:20,666 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 26 [2020-10-13 23:55:20,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:55:20,667 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2020-10-13 23:55:20,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:55:20,667 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2020-10-13 23:55:20,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-13 23:55:20,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:55:20,669 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] [2020-10-13 23:55:20,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 23:55:20,669 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:55:20,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:55:20,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1255066423, now seen corresponding path program 1 times [2020-10-13 23:55:20,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:55:20,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126522959] [2020-10-13 23:55:20,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:55:20,683 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-13 23:55:20,684 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-13 23:55:20,684 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 23:55:20,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 23:55:20,710 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-13 23:55:20,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 11:55:20 BoogieIcfgContainer [2020-10-13 23:55:20,711 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 23:55:20,714 INFO L168 Benchmark]: Toolchain (without parser) took 4865.93 ms. Allocated memory was 147.8 MB in the beginning and 243.3 MB in the end (delta: 95.4 MB). Free memory was 102.9 MB in the beginning and 171.3 MB in the end (delta: -68.4 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2020-10-13 23:55:20,715 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 147.8 MB. Free memory was 121.1 MB in the beginning and 120.7 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-10-13 23:55:20,716 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.53 ms. Allocated memory is still 147.8 MB. Free memory was 102.5 MB in the beginning and 92.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-10-13 23:55:20,717 INFO L168 Benchmark]: Boogie Preprocessor took 132.14 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 92.0 MB in the beginning and 181.2 MB in the end (delta: -89.2 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-10-13 23:55:20,718 INFO L168 Benchmark]: RCFGBuilder took 384.10 ms. Allocated memory is still 203.9 MB. Free memory was 181.2 MB in the beginning and 163.9 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. [2020-10-13 23:55:20,719 INFO L168 Benchmark]: TraceAbstraction took 4020.84 ms. Allocated memory was 203.9 MB in the beginning and 243.3 MB in the end (delta: 39.3 MB). Free memory was 163.9 MB in the beginning and 171.3 MB in the end (delta: -7.3 MB). Peak memory consumption was 32.0 MB. Max. memory is 7.1 GB. [2020-10-13 23:55:20,729 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 147.8 MB. Free memory was 121.1 MB in the beginning and 120.7 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 322.53 ms. Allocated memory is still 147.8 MB. Free memory was 102.5 MB in the beginning and 92.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.14 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 92.0 MB in the beginning and 181.2 MB in the end (delta: -89.2 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 384.10 ms. Allocated memory is still 203.9 MB. Free memory was 181.2 MB in the beginning and 163.9 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4020.84 ms. Allocated memory was 203.9 MB in the beginning and 243.3 MB in the end (delta: 39.3 MB). Free memory was 163.9 MB in the beginning and 171.3 MB in the end (delta: -7.3 MB). Peak memory consumption was 32.0 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] = 0 [L30] i=0 [L30] COND TRUE i