/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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-patterns/array3_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 18:24:51,506 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 18:24:51,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 18:24:51,544 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 18:24:51,545 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 18:24:51,553 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 18:24:51,555 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 18:24:51,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 18:24:51,562 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 18:24:51,565 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 18:24:51,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 18:24:51,567 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 18:24:51,567 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 18:24:51,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 18:24:51,574 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 18:24:51,575 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 18:24:51,577 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 18:24:51,579 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 18:24:51,581 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 18:24:51,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 18:24:51,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 18:24:51,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 18:24:51,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 18:24:51,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 18:24:51,606 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 18:24:51,607 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 18:24:51,610 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 18:24:51,611 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 18:24:51,612 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 18:24:51,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 18:24:51,613 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 18:24:51,617 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 18:24:51,619 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 18:24:51,620 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 18:24:51,624 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 18:24:51,624 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 18:24:51,625 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 18:24:51,625 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 18:24:51,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 18:24:51,627 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 18:24:51,628 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 18:24:51,629 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 [2020-10-14 18:24:51,674 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 18:24:51,674 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 18:24:51,676 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 18:24:51,677 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 18:24:51,677 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 18:24:51,677 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 18:24:51,677 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 18:24:51,678 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 18:24:51,678 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 18:24:51,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 18:24:51,679 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 18:24:51,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 18:24:51,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 18:24:51,680 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 18:24:51,680 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 18:24:51,681 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 18:24:51,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 18:24:51,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 18:24:51,681 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 18:24:51,681 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 18:24:51,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 18:24:51,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 18:24:51,682 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 18:24:51,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 18:24:51,683 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 18:24:51,683 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 18:24:51,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 18:24:51,683 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 18:24:51,683 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 18:24:51,684 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 18:24:51,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 18:24:51,985 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 18:24:51,989 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 18:24:51,990 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 18:24:51,991 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 18:24:51,991 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-patterns/array3_pattern.c [2020-10-14 18:24:52,072 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97a8fa91a/fbf83b55fe7e40f993efa266497d4e73/FLAG3c8fb1ddc [2020-10-14 18:24:52,570 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 18:24:52,571 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-patterns/array3_pattern.c [2020-10-14 18:24:52,577 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97a8fa91a/fbf83b55fe7e40f993efa266497d4e73/FLAG3c8fb1ddc [2020-10-14 18:24:52,967 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97a8fa91a/fbf83b55fe7e40f993efa266497d4e73 [2020-10-14 18:24:52,977 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 18:24:52,978 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 18:24:52,980 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 18:24:52,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 18:24:52,984 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 18:24:52,985 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:24:52" (1/1) ... [2020-10-14 18:24:52,988 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@590f663f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:24:52, skipping insertion in model container [2020-10-14 18:24:52,988 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:24:52" (1/1) ... [2020-10-14 18:24:52,996 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 18:24:53,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 18:24:53,178 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:24:53,183 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 18:24:53,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:24:53,317 INFO L208 MainTranslator]: Completed translation [2020-10-14 18:24:53,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:24:53 WrapperNode [2020-10-14 18:24:53,318 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 18:24:53,319 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 18:24:53,319 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 18:24:53,319 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 18:24:53,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:24:53" (1/1) ... [2020-10-14 18:24:53,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:24:53" (1/1) ... [2020-10-14 18:24:53,342 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:24:53" (1/1) ... [2020-10-14 18:24:53,342 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:24:53" (1/1) ... [2020-10-14 18:24:53,350 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:24:53" (1/1) ... [2020-10-14 18:24:53,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:24:53" (1/1) ... [2020-10-14 18:24:53,358 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:24:53" (1/1) ... [2020-10-14 18:24:53,361 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 18:24:53,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 18:24:53,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 18:24:53,362 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 18:24:53,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:24:53" (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 [2020-10-14 18:24:53,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 18:24:53,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 18:24:53,428 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 18:24:53,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 18:24:53,429 INFO L138 BoogieDeclarations]: Found implementation of procedure square [2020-10-14 18:24:53,429 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 18:24:53,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 18:24:53,429 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 18:24:53,429 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 18:24:53,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 18:24:53,430 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 18:24:53,430 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2020-10-14 18:24:53,430 INFO L130 BoogieDeclarations]: Found specification of procedure square [2020-10-14 18:24:53,430 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 18:24:53,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 18:24:53,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 18:24:53,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 18:24:53,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 18:24:53,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 18:24:53,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 18:24:53,737 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 18:24:53,738 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 18:24:53,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:24:53 BoogieIcfgContainer [2020-10-14 18:24:53,743 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 18:24:53,745 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 18:24:53,745 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 18:24:53,749 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 18:24:53,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 06:24:52" (1/3) ... [2020-10-14 18:24:53,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cfdb3d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:24:53, skipping insertion in model container [2020-10-14 18:24:53,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:24:53" (2/3) ... [2020-10-14 18:24:53,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cfdb3d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:24:53, skipping insertion in model container [2020-10-14 18:24:53,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:24:53" (3/3) ... [2020-10-14 18:24:53,754 INFO L109 eAbstractionObserver]: Analyzing ICFG array3_pattern.c [2020-10-14 18:24:53,769 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 18:24:53,777 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 18:24:53,803 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 18:24:53,836 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 18:24:53,837 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 18:24:53,837 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 18:24:53,837 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 18:24:53,837 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 18:24:53,838 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 18:24:53,838 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 18:24:53,838 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 18:24:53,872 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-10-14 18:24:53,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 18:24:53,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:24:53,879 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] [2020-10-14 18:24:53,879 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:24:53,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:24:53,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1105284188, now seen corresponding path program 1 times [2020-10-14 18:24:53,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:24:53,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [759436948] [2020-10-14 18:24:53,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:24:54,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:24:54,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:24:54,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:24:54,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:24:54,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:24:54,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 18:24:54,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:24:54,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 517 [2020-10-14 18:24:54,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:24:54,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:24:54,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:24:54,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 18:24:54,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 18:24:54,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 18:24:54,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:24:54,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:24:54,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:24:54,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:24:54,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:24:54,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:24:54,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 18:24:54,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:24:54,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:24:54,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:24:54,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:24:54,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:24:54,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 18:24:54,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 18:24:54,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:24:54,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:24:54,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:24:54,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:24:54,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:24:54,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:24:54,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 18:24:54,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:24:54,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:24:54,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:24:54,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:24:54,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:24:54,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:24:54,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:24:54,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [759436948] [2020-10-14 18:24:54,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:24:54,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 18:24:54,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52207177] [2020-10-14 18:24:54,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 18:24:54,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:24:54,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 18:24:54,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 18:24:54,753 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 6 states. [2020-10-14 18:24:55,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:24:55,009 INFO L93 Difference]: Finished difference Result 84 states and 111 transitions. [2020-10-14 18:24:55,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 18:24:55,011 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-10-14 18:24:55,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:24:55,022 INFO L225 Difference]: With dead ends: 84 [2020-10-14 18:24:55,022 INFO L226 Difference]: Without dead ends: 36 [2020-10-14 18:24:55,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-14 18:24:55,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-14 18:24:55,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-10-14 18:24:55,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-14 18:24:55,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-10-14 18:24:55,081 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 20 [2020-10-14 18:24:55,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:24:55,081 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-10-14 18:24:55,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 18:24:55,082 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-10-14 18:24:55,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 18:24:55,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:24:55,098 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:24:55,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 18:24:55,098 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:24:55,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:24:55,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1769071285, now seen corresponding path program 1 times [2020-10-14 18:24:55,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:24:55,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078492352] [2020-10-14 18:24:55,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:24:55,121 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-14 18:24:55,121 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-14 18:24:55,121 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 18:24:55,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 18:24:55,145 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-14 18:24:55,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 06:24:55 BoogieIcfgContainer [2020-10-14 18:24:55,145 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 18:24:55,148 INFO L168 Benchmark]: Toolchain (without parser) took 2169.03 ms. Allocated memory was 147.3 MB in the beginning and 233.8 MB in the end (delta: 86.5 MB). Free memory was 101.8 MB in the beginning and 199.8 MB in the end (delta: -98.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-14 18:24:55,149 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 147.3 MB. Free memory was 120.6 MB in the beginning and 120.2 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-14 18:24:55,150 INFO L168 Benchmark]: CACSL2BoogieTranslator took 338.39 ms. Allocated memory was 147.3 MB in the beginning and 205.0 MB in the end (delta: 57.7 MB). Free memory was 101.8 MB in the beginning and 183.3 MB in the end (delta: -81.5 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-10-14 18:24:55,151 INFO L168 Benchmark]: Boogie Preprocessor took 42.35 ms. Allocated memory is still 205.0 MB. Free memory was 183.3 MB in the beginning and 181.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-10-14 18:24:55,152 INFO L168 Benchmark]: RCFGBuilder took 381.22 ms. Allocated memory is still 205.0 MB. Free memory was 181.1 MB in the beginning and 162.9 MB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 7.1 GB. [2020-10-14 18:24:55,153 INFO L168 Benchmark]: TraceAbstraction took 1400.48 ms. Allocated memory was 205.0 MB in the beginning and 233.8 MB in the end (delta: 28.8 MB). Free memory was 162.0 MB in the beginning and 199.8 MB in the end (delta: -37.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-14 18:24:55,157 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 147.3 MB. Free memory was 120.6 MB in the beginning and 120.2 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 338.39 ms. Allocated memory was 147.3 MB in the beginning and 205.0 MB in the end (delta: 57.7 MB). Free memory was 101.8 MB in the beginning and 183.3 MB in the end (delta: -81.5 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 42.35 ms. Allocated memory is still 205.0 MB. Free memory was 183.3 MB in the beginning and 181.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 381.22 ms. Allocated memory is still 205.0 MB. Free memory was 181.1 MB in the beginning and 162.9 MB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1400.48 ms. Allocated memory was 205.0 MB in the beginning and 233.8 MB in the end (delta: 28.8 MB). Free memory was 162.0 MB in the beginning and 199.8 MB in the end (delta: -37.8 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 31]: 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: [L35] signed long long ARR_SIZE ; [L44] ARR_SIZE = (signed long long)__VERIFIER_nondet_short() [L45] CALL assume_abort_if_not(ARR_SIZE > 0) [L29] COND FALSE !(!cond) [L45] RET assume_abort_if_not(ARR_SIZE > 0) [L47] int array1[ARR_SIZE] ; [L48] int array2[ARR_SIZE] ; [L49] int count = 0, num = -1 ; [L50] signed long long sum1 = 0, sum2 = 0 ; [L51] int temp ; [L52] short index ; [L54] count=0 [L54] COND FALSE !(count=0 && index < ARR_SIZE) [L29] COND FALSE !(!cond) [L64] RET assume_abort_if_not(index>=0 && index < ARR_SIZE) [L66] EXPR array1[index] [L66] array1[index] = array1[index] + num*(num*index) [L67] EXPR array2[ARR_SIZE-1-index] [L67] array2[ARR_SIZE-1-index] = array2[ARR_SIZE-1-index] + (num * index) [L69] temp = __VERIFIER_nondet_int() [L70] COND TRUE temp == 0 [L73] count=0 [L73] COND TRUE count