/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --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 [2020-09-25 09:09:42,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:09:42,385 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:09:42,421 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:09:42,421 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:09:42,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:09:42,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:09:42,426 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:09:42,428 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:09:42,429 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:09:42,430 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:09:42,432 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:09:42,432 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:09:42,433 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:09:42,434 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:09:42,436 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:09:42,437 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:09:42,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:09:42,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:09:42,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:09:42,443 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:09:42,445 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:09:42,446 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:09:42,447 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:09:42,450 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:09:42,450 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:09:42,450 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:09:42,451 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:09:42,452 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:09:42,453 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:09:42,453 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:09:42,454 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:09:42,455 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:09:42,456 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:09:42,457 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:09:42,457 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:09:42,458 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:09:42,458 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:09:42,459 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:09:42,460 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:09:42,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:09:42,461 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 09:09:42,490 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:09:42,490 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:09:42,494 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:09:42,494 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:09:42,495 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:09:42,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:09:42,496 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:09:42,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:09:42,496 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:09:42,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:09:42,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:09:42,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:09:42,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:09:42,497 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:09:42,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:09:42,497 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:09:42,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:09:42,500 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:09:42,500 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:09:42,500 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:09:42,500 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:09:42,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:09:42,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:09:42,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:09:42,501 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:09:42,501 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:09:42,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:09:42,502 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:09:42,502 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:09:42,502 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 09:09:43,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:09:43,037 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:09:43,041 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:09:43,043 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:09:43,044 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:09:43,045 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s1iff.c [2020-09-25 09:09:43,136 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2272969f2/7df56584c85e4bd59e03b7a7d7ff5245/FLAG3f51cd71e [2020-09-25 09:09:43,652 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:09:43,653 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s1iff.c [2020-09-25 09:09:43,662 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2272969f2/7df56584c85e4bd59e03b7a7d7ff5245/FLAG3f51cd71e [2020-09-25 09:09:43,994 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2272969f2/7df56584c85e4bd59e03b7a7d7ff5245 [2020-09-25 09:09:44,007 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:09:44,013 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:09:44,014 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:09:44,014 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:09:44,019 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:09:44,020 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:09:43" (1/1) ... [2020-09-25 09:09:44,025 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5253b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:09:44, skipping insertion in model container [2020-09-25 09:09:44,025 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:09:43" (1/1) ... [2020-09-25 09:09:44,034 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:09:44,061 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:09:44,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:09:44,300 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:09:44,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:09:44,346 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:09:44,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:09:44 WrapperNode [2020-09-25 09:09:44,347 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:09:44,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:09:44,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:09:44,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:09:44,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:09:44" (1/1) ... [2020-09-25 09:09:44,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:09:44" (1/1) ... [2020-09-25 09:09:44,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:09:44" (1/1) ... [2020-09-25 09:09:44,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:09:44" (1/1) ... [2020-09-25 09:09:44,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:09:44" (1/1) ... [2020-09-25 09:09:44,462 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:09:44" (1/1) ... [2020-09-25 09:09:44,463 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:09:44" (1/1) ... [2020-09-25 09:09:44,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:09:44,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:09:44,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:09:44,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:09:44,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:09:44" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:09:44,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:09:44,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:09:44,562 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 09:09:44,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 09:09:44,562 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:09:44,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:09:44,563 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 09:09:44,563 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 09:09:44,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 09:09:44,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:09:44,564 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 09:09:44,564 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:09:44,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 09:09:44,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 09:09:44,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 09:09:44,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 09:09:44,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 09:09:44,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:09:44,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:09:44,918 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:09:44,919 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 09:09:44,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:09:44 BoogieIcfgContainer [2020-09-25 09:09:44,925 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:09:44,926 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:09:44,926 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:09:44,930 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:09:44,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:09:43" (1/3) ... [2020-09-25 09:09:44,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6afe65e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:09:44, skipping insertion in model container [2020-09-25 09:09:44,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:09:44" (2/3) ... [2020-09-25 09:09:44,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6afe65e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:09:44, skipping insertion in model container [2020-09-25 09:09:44,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:09:44" (3/3) ... [2020-09-25 09:09:44,935 INFO L109 eAbstractionObserver]: Analyzing ICFG s1iff.c [2020-09-25 09:09:44,946 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:09:44,956 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:09:44,979 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:09:45,011 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:09:45,011 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:09:45,011 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:09:45,011 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:09:45,011 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:09:45,011 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:09:45,011 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:09:45,012 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:09:45,038 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-09-25 09:09:45,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-25 09:09:45,046 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:09:45,047 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] [2020-09-25 09:09:45,048 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:09:45,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:09:45,054 INFO L82 PathProgramCache]: Analyzing trace with hash 171473808, now seen corresponding path program 1 times [2020-09-25 09:09:45,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:09:45,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407536400] [2020-09-25 09:09:45,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:09:45,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:45,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:45,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:45,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:45,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 09:09:45,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:09:45,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-09-25 09:09:45,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:45,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:45,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:09:45,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-25 09:09:45,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:09:45,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:09:45,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:09:45,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:45,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:45,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:45,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:09:45,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:09:45,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 09:09:45,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:45,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:45,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:09:45,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:09:45,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:09:45,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:09:45,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 09:09:45,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:45,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:45,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:45,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:09:45,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:09:45,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 09:09:45,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:45,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:45,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:09:45,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:09:45,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:09:45,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:09:45,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:09:45,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407536400] [2020-09-25 09:09:45,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:09:45,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 09:09:45,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443386093] [2020-09-25 09:09:45,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 09:09:45,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:09:45,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 09:09:45,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 09:09:45,685 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2020-09-25 09:09:45,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:09:45,865 INFO L93 Difference]: Finished difference Result 113 states and 126 transitions. [2020-09-25 09:09:45,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 09:09:45,867 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-09-25 09:09:45,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:09:45,879 INFO L225 Difference]: With dead ends: 113 [2020-09-25 09:09:45,879 INFO L226 Difference]: Without dead ends: 53 [2020-09-25 09:09:45,884 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 [2020-09-25 09:09:45,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-25 09:09:45,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-25 09:09:45,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-25 09:09:45,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-09-25 09:09:45,940 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 31 [2020-09-25 09:09:45,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:09:45,941 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-09-25 09:09:45,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 09:09:45,942 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-09-25 09:09:45,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-25 09:09:45,943 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:09:45,943 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] [2020-09-25 09:09:45,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:09:45,944 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:09:45,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:09:45,945 INFO L82 PathProgramCache]: Analyzing trace with hash 921692051, now seen corresponding path program 1 times [2020-09-25 09:09:45,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:09:45,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [815846533] [2020-09-25 09:09:45,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:09:45,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:45,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:46,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:46,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:46,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 09:09:46,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:09:46,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 402 [2020-09-25 09:09:46,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:46,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:46,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:09:46,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 09:09:46,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 09:09:46,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:09:46,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:09:46,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:46,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:46,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:46,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:09:46,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:09:46,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:09:46,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:46,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:46,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:09:46,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:09:46,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:09:46,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 09:09:46,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 09:09:46,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:46,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:46,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:46,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:09:46,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:09:46,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 09:09:46,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:46,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:46,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:09:46,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:09:46,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:09:46,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:09:46,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:09:46,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [815846533] [2020-09-25 09:09:46,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:09:46,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 09:09:46,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595634018] [2020-09-25 09:09:46,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:09:46,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:09:46,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:09:46,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:09:46,495 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 5 states. [2020-09-25 09:09:46,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:09:46,671 INFO L93 Difference]: Finished difference Result 80 states and 85 transitions. [2020-09-25 09:09:46,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:09:46,672 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-09-25 09:09:46,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:09:46,674 INFO L225 Difference]: With dead ends: 80 [2020-09-25 09:09:46,674 INFO L226 Difference]: Without dead ends: 55 [2020-09-25 09:09:46,676 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 [2020-09-25 09:09:46,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-25 09:09:46,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-25 09:09:46,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 09:09:46,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2020-09-25 09:09:46,687 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 31 [2020-09-25 09:09:46,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:09:46,687 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2020-09-25 09:09:46,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:09:46,688 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2020-09-25 09:09:46,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 09:09:46,690 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:09:46,690 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] [2020-09-25 09:09:46,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:09:46,690 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:09:46,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:09:46,691 INFO L82 PathProgramCache]: Analyzing trace with hash -827220298, now seen corresponding path program 1 times [2020-09-25 09:09:46,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:09:46,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1686558401] [2020-09-25 09:09:46,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:09:46,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:46,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:47,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:47,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:47,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:48,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:48,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:49,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:49,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:49,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:50,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:51,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:51,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:51,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:51,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:51,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 09:09:51,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 09:09:51,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 09:09:51,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:51,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:51,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 09:09:51,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 09:09:51,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 09:09:51,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 09:09:52,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:09:52,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:52,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:52,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:52,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:09:52,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:09:52,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:09:52,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:52,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:52,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:09:52,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:09:52,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:09:52,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:09:52,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 09:09:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:52,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:52,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:52,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:09:52,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:09:52,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 09:09:52,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:52,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:52,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:09:52,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:09:52,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:09:52,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:09:52,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:09:52,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1686558401] [2020-09-25 09:09:52,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:09:52,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 09:09:52,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011723260] [2020-09-25 09:09:52,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 09:09:52,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:09:52,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 09:09:52,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-09-25 09:09:52,342 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 17 states. [2020-09-25 09:09:53,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:09:53,298 INFO L93 Difference]: Finished difference Result 84 states and 87 transitions. [2020-09-25 09:09:53,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 09:09:53,299 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 48 [2020-09-25 09:09:53,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:09:53,301 INFO L225 Difference]: With dead ends: 84 [2020-09-25 09:09:53,301 INFO L226 Difference]: Without dead ends: 78 [2020-09-25 09:09:53,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=170, Invalid=760, Unknown=0, NotChecked=0, Total=930 [2020-09-25 09:09:53,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-25 09:09:53,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 67. [2020-09-25 09:09:53,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-25 09:09:53,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2020-09-25 09:09:53,312 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 48 [2020-09-25 09:09:53,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:09:53,312 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2020-09-25 09:09:53,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 09:09:53,313 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2020-09-25 09:09:53,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 09:09:53,314 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:09:53,314 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] [2020-09-25 09:09:53,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:09:53,315 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:09:53,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:09:53,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1272927570, now seen corresponding path program 1 times [2020-09-25 09:09:53,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:09:53,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072913227] [2020-09-25 09:09:53,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:09:53,332 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-25 09:09:53,333 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-25 09:09:53,333 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 09:09:53,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:09:53,361 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-25 09:09:53,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 09:09:53 BoogieIcfgContainer [2020-09-25 09:09:53,361 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 09:09:53,365 INFO L168 Benchmark]: Toolchain (without parser) took 9355.30 ms. Allocated memory was 137.4 MB in the beginning and 297.3 MB in the end (delta: 159.9 MB). Free memory was 100.8 MB in the beginning and 246.9 MB in the end (delta: -146.1 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-09-25 09:09:53,366 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-25 09:09:53,367 INFO L168 Benchmark]: CACSL2BoogieTranslator took 332.99 ms. Allocated memory is still 137.4 MB. Free memory was 100.2 MB in the beginning and 89.8 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-25 09:09:53,368 INFO L168 Benchmark]: Boogie Preprocessor took 118.77 ms. Allocated memory was 137.4 MB in the beginning and 199.8 MB in the end (delta: 62.4 MB). Free memory was 89.8 MB in the beginning and 176.8 MB in the end (delta: -87.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-25 09:09:53,369 INFO L168 Benchmark]: RCFGBuilder took 458.31 ms. Allocated memory is still 199.8 MB. Free memory was 176.8 MB in the beginning and 158.2 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2020-09-25 09:09:53,370 INFO L168 Benchmark]: TraceAbstraction took 8435.13 ms. Allocated memory was 199.8 MB in the beginning and 297.3 MB in the end (delta: 97.5 MB). Free memory was 157.4 MB in the beginning and 246.9 MB in the end (delta: -89.5 MB). Peak memory consumption was 8.0 MB. Max. memory is 7.1 GB. [2020-09-25 09:09:53,374 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 332.99 ms. Allocated memory is still 137.4 MB. Free memory was 100.2 MB in the beginning and 89.8 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.77 ms. Allocated memory was 137.4 MB in the beginning and 199.8 MB in the end (delta: 62.4 MB). Free memory was 89.8 MB in the beginning and 176.8 MB in the end (delta: -87.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 458.31 ms. Allocated memory is still 199.8 MB. Free memory was 176.8 MB in the beginning and 158.2 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8435.13 ms. Allocated memory was 199.8 MB in the beginning and 297.3 MB in the end (delta: 97.5 MB). Free memory was 157.4 MB in the beginning and 246.9 MB in the end (delta: -89.5 MB). Peak memory consumption was 8.0 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