/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=DEEPEST --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 language data_model -i ../../../trunk/examples/svcomp/array-fpi/s2iff.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 14:41:46,577 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:41:46,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:41:46,638 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:41:46,639 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:41:46,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:41:46,649 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:41:46,654 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:41:46,658 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:41:46,664 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:41:46,666 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:41:46,668 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:41:46,668 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:41:46,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:41:46,676 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:41:46,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:41:46,679 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:41:46,683 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:41:46,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:41:46,699 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:41:46,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:41:46,703 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:41:46,705 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:41:46,708 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:41:46,719 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:41:46,719 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:41:46,720 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:41:46,722 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:41:46,723 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:41:46,724 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:41:46,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:41:46,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:41:46,727 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:41:46,728 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:41:46,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:41:46,736 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:41:46,737 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:41:46,737 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:41:46,738 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:41:46,739 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:41:46,740 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:41:46,747 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 [2020-10-27 14:41:46,801 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:41:46,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:41:46,806 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:41:46,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:41:46,807 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:41:46,808 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:41:46,808 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:41:46,808 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:41:46,809 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:41:46,809 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:41:46,809 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:41:46,809 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:41:46,809 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:41:46,809 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:41:46,810 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:41:46,810 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:41:46,810 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:41:46,810 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:41:46,810 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:41:46,811 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:41:46,811 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:41:46,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:41:46,812 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:41:46,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:41:46,813 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:41:46,813 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:41:46,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:41:46,813 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:41:46,814 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:41:46,814 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:41:47,274 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:41:47,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:41:47,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:41:47,308 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:41:47,308 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:41:47,310 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s2iff.c [2020-10-27 14:41:47,412 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9421d4d34/7f1bc193dd6f48d7811a6683995d7c10/FLAGace316088 [2020-10-27 14:41:48,074 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:41:48,075 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s2iff.c [2020-10-27 14:41:48,085 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9421d4d34/7f1bc193dd6f48d7811a6683995d7c10/FLAGace316088 [2020-10-27 14:41:48,411 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9421d4d34/7f1bc193dd6f48d7811a6683995d7c10 [2020-10-27 14:41:48,423 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:41:48,431 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:41:48,437 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:41:48,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:41:48,441 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:41:48,443 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:41:48" (1/1) ... [2020-10-27 14:41:48,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@685e4fda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:41:48, skipping insertion in model container [2020-10-27 14:41:48,449 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:41:48" (1/1) ... [2020-10-27 14:41:48,459 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:41:48,482 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:41:48,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:41:48,726 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:41:48,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:41:48,770 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:41:48,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:41:48 WrapperNode [2020-10-27 14:41:48,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:41:48,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:41:48,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:41:48,773 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:41:48,786 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:41:48" (1/1) ... [2020-10-27 14:41:48,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:41:48" (1/1) ... [2020-10-27 14:41:48,796 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:41:48" (1/1) ... [2020-10-27 14:41:48,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:41:48" (1/1) ... [2020-10-27 14:41:48,806 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:41:48" (1/1) ... [2020-10-27 14:41:48,812 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:41:48" (1/1) ... [2020-10-27 14:41:48,814 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:41:48" (1/1) ... [2020-10-27 14:41:48,816 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:41:48,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:41:48,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:41:48,818 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:41:48,819 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:41:48" (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 [2020-10-27 14:41:48,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:41:48,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:41:48,918 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:41:48,918 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 14:41:48,918 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 14:41:48,918 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:41:48,919 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:41:48,919 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:41:48,919 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:41:48,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:41:48,919 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 14:41:48,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 14:41:48,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 14:41:48,920 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 14:41:48,920 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:41:48,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 14:41:48,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:41:48,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:41:48,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:41:48,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:41:48,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:41:48,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:41:49,557 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:41:49,559 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-27 14:41:49,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:41:49 BoogieIcfgContainer [2020-10-27 14:41:49,566 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:41:49,575 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:41:49,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:41:49,603 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:41:49,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:41:48" (1/3) ... [2020-10-27 14:41:49,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40488563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:41:49, skipping insertion in model container [2020-10-27 14:41:49,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:41:48" (2/3) ... [2020-10-27 14:41:49,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40488563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:41:49, skipping insertion in model container [2020-10-27 14:41:49,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:41:49" (3/3) ... [2020-10-27 14:41:49,615 INFO L111 eAbstractionObserver]: Analyzing ICFG s2iff.c [2020-10-27 14:41:49,645 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:41:49,653 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:41:49,671 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:41:49,729 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:41:49,730 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:41:49,730 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:41:49,730 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:41:49,730 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:41:49,730 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:41:49,731 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:41:49,731 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:41:49,756 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-27 14:41:49,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 14:41:49,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:41:49,767 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] [2020-10-27 14:41:49,768 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:41:49,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:41:49,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1361575079, now seen corresponding path program 1 times [2020-10-27 14:41:49,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:41:49,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831278208] [2020-10-27 14:41:49,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:41:49,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:50,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:50,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:50,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:50,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:50,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 14:41:50,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:41:50,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 457 [2020-10-27 14:41:50,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:50,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:41:50,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 14:41:50,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:41:50,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 14:41:50,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:41:50,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:50,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:50,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:50,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:41:50,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:50,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 14:41:50,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:50,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:41:50,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:50,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:41:50,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:41:50,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:41:50,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:50,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:50,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:50,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:50,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:50,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:41:50,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 14:41:50,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:50,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:41:50,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 14:41:50,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:41:50,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:50,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:41:50,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831278208] [2020-10-27 14:41:50,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:41:50,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 14:41:50,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864018673] [2020-10-27 14:41:50,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 14:41:50,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:41:50,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 14:41:50,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:41:50,729 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-10-27 14:41:50,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:41:50,858 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2020-10-27 14:41:50,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 14:41:50,861 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-27 14:41:50,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:41:50,872 INFO L225 Difference]: With dead ends: 59 [2020-10-27 14:41:50,872 INFO L226 Difference]: Without dead ends: 26 [2020-10-27 14:41:50,877 INFO L677 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 [2020-10-27 14:41:50,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-27 14:41:50,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-27 14:41:50,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-27 14:41:50,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-10-27 14:41:50,923 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 22 [2020-10-27 14:41:50,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:41:50,923 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-10-27 14:41:50,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 14:41:50,924 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-10-27 14:41:50,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 14:41:50,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:41:50,925 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] [2020-10-27 14:41:50,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:41:50,925 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:41:50,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:41:50,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1173980304, now seen corresponding path program 1 times [2020-10-27 14:41:50,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:41:50,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1942220789] [2020-10-27 14:41:50,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:41:50,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:50,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:50,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:51,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:51,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 14:41:51,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:41:51,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-27 14:41:51,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:51,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:41:51,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 14:41:51,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:41:51,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 14:41:51,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:41:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:51,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:51,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:51,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:41:51,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:51,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 14:41:51,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:51,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:41:51,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:51,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:41:51,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 14:41:51,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:41:51,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:51,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:51,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:51,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:51,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:51,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 14:41:51,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:51,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:51,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:51,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:51,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:41:51,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:41:51,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1942220789] [2020-10-27 14:41:51,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:41:51,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 14:41:51,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936500366] [2020-10-27 14:41:51,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 14:41:51,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:41:51,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 14:41:51,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:41:51,404 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 5 states. [2020-10-27 14:41:51,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:41:51,572 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-10-27 14:41:51,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 14:41:51,573 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-27 14:41:51,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:41:51,574 INFO L225 Difference]: With dead ends: 39 [2020-10-27 14:41:51,574 INFO L226 Difference]: Without dead ends: 28 [2020-10-27 14:41:51,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:41:51,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-27 14:41:51,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-27 14:41:51,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-27 14:41:51,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-10-27 14:41:51,585 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 22 [2020-10-27 14:41:51,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:41:51,585 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-10-27 14:41:51,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 14:41:51,586 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-10-27 14:41:51,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-27 14:41:51,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:41:51,587 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] [2020-10-27 14:41:51,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 14:41:51,588 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:41:51,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:41:51,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1619095335, now seen corresponding path program 1 times [2020-10-27 14:41:51,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:41:51,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570761373] [2020-10-27 14:41:51,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:41:51,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:51,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:51,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:52,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:53,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:53,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-27 14:41:53,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:41:53,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1472 [2020-10-27 14:41:53,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:53,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:41:53,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 14:41:53,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 14:41:53,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:53,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:41:53,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:53,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:53,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:53,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:41:53,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:53,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:41:53,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:53,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:41:53,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:53,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:41:53,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:53,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:41:53,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:53,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:53,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:53,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:53,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:53,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:41:53,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:53,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:41:53,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:53,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:41:53,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:53,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:41:53,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570761373] [2020-10-27 14:41:53,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:41:53,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:41:53,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3620396] [2020-10-27 14:41:53,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:41:53,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:41:53,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:41:53,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:41:53,401 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 12 states. [2020-10-27 14:41:53,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:41:53,995 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2020-10-27 14:41:53,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 14:41:53,996 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-10-27 14:41:53,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:41:53,998 INFO L225 Difference]: With dead ends: 43 [2020-10-27 14:41:53,999 INFO L226 Difference]: Without dead ends: 36 [2020-10-27 14:41:54,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:41:54,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-27 14:41:54,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-10-27 14:41:54,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-27 14:41:54,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-10-27 14:41:54,010 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 27 [2020-10-27 14:41:54,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:41:54,010 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-10-27 14:41:54,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:41:54,010 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-10-27 14:41:54,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-27 14:41:54,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:41:54,011 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] [2020-10-27 14:41:54,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 14:41:54,012 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:41:54,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:41:54,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1995813591, now seen corresponding path program 1 times [2020-10-27 14:41:54,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:41:54,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516323515] [2020-10-27 14:41:54,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:41:54,025 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-27 14:41:54,026 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-27 14:41:54,026 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 14:41:54,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 14:41:54,048 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-27 14:41:54,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 02:41:54 BoogieIcfgContainer [2020-10-27 14:41:54,048 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 14:41:54,051 INFO L168 Benchmark]: Toolchain (without parser) took 5624.10 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 136.3 MB in the beginning and 126.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 43.3 MB. Max. memory is 8.0 GB. [2020-10-27 14:41:54,052 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 125.8 MB. Free memory is still 100.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 14:41:54,053 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.78 ms. Allocated memory is still 160.4 MB. Free memory was 135.5 MB in the beginning and 125.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 14:41:54,054 INFO L168 Benchmark]: Boogie Preprocessor took 44.52 ms. Allocated memory is still 160.4 MB. Free memory was 125.9 MB in the beginning and 124.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-27 14:41:54,054 INFO L168 Benchmark]: RCFGBuilder took 748.78 ms. Allocated memory is still 160.4 MB. Free memory was 124.2 MB in the beginning and 143.5 MB in the end (delta: -19.3 MB). Peak memory consumption was 19.5 MB. Max. memory is 8.0 GB. [2020-10-27 14:41:54,055 INFO L168 Benchmark]: TraceAbstraction took 4472.90 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 143.0 MB in the beginning and 126.0 MB in the end (delta: 17.1 MB). Peak memory consumption was 49.0 MB. Max. memory is 8.0 GB. [2020-10-27 14:41:54,059 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 125.8 MB. Free memory is still 100.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 334.78 ms. Allocated memory is still 160.4 MB. Free memory was 135.5 MB in the beginning and 125.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.52 ms. Allocated memory is still 160.4 MB. Free memory was 125.9 MB in the beginning and 124.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 748.78 ms. Allocated memory is still 160.4 MB. Free memory was 124.2 MB in the beginning and 143.5 MB in the end (delta: -19.3 MB). Peak memory consumption was 19.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4472.90 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 143.0 MB in the beginning and 126.0 MB in the end (delta: 17.1 MB). Peak memory consumption was 49.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 10]: 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: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 1 [L32] i=0 [L32] COND TRUE i