/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=NARROWEST --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 02:18:28,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:18:28,454 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:18:28,502 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:18:28,503 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:18:28,514 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:18:28,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:18:28,521 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:18:28,524 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:18:28,528 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:18:28,529 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:18:28,530 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:18:28,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:18:28,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:18:28,538 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:18:28,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:18:28,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:18:28,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:18:28,544 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:18:28,554 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:18:28,557 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:18:28,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:18:28,559 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:18:28,560 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:18:28,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:18:28,564 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:18:28,564 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:18:28,567 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:18:28,568 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:18:28,570 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:18:28,570 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:18:28,571 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:18:28,572 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:18:28,573 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:18:28,574 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:18:28,574 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:18:28,575 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:18:28,576 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:18:28,576 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:18:28,577 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:18:28,578 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:18:28,579 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 02:18:28,626 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:18:28,627 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:18:28,629 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:18:28,629 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:18:28,630 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:18:28,630 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:18:28,630 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:18:28,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:18:28,631 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:18:28,631 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:18:28,632 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:18:28,632 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:18:28,632 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:18:28,633 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:18:28,633 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:18:28,633 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:18:28,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:18:28,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:18:28,634 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:18:28,634 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:18:28,634 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:18:28,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:18:28,635 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:18:28,635 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:18:28,635 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:18:28,635 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:18:28,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:18:28,636 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:18:28,636 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:18:28,636 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true; [2020-09-25 02:18:29,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:18:29,122 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:18:29,126 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:18:29,129 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:18:29,130 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:18:29,131 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s1iff.c [2020-09-25 02:18:29,223 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f77c19156/fb2abd5e07b540da92d28385e5750dbd/FLAG5f87b5952 [2020-09-25 02:18:29,794 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:18:29,795 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s1iff.c [2020-09-25 02:18:29,804 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f77c19156/fb2abd5e07b540da92d28385e5750dbd/FLAG5f87b5952 [2020-09-25 02:18:30,130 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f77c19156/fb2abd5e07b540da92d28385e5750dbd [2020-09-25 02:18:30,146 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:18:30,152 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:18:30,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:18:30,157 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:18:30,161 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:18:30,162 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:18:30" (1/1) ... [2020-09-25 02:18:30,167 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44406637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:30, skipping insertion in model container [2020-09-25 02:18:30,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:18:30" (1/1) ... [2020-09-25 02:18:30,177 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:18:30,206 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:18:30,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:18:30,459 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:18:30,486 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:18:30,508 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:18:30,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:30 WrapperNode [2020-09-25 02:18:30,509 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:18:30,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:18:30,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:18:30,510 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:18:30,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:30" (1/1) ... [2020-09-25 02:18:30,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:30" (1/1) ... [2020-09-25 02:18:30,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:30" (1/1) ... [2020-09-25 02:18:30,619 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:30" (1/1) ... [2020-09-25 02:18:30,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:30" (1/1) ... [2020-09-25 02:18:30,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:30" (1/1) ... [2020-09-25 02:18:30,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:30" (1/1) ... [2020-09-25 02:18:30,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:18:30,650 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:18:30,650 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:18:30,650 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:18:30,651 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:30" (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 02:18:30,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:18:30,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:18:30,728 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 02:18:30,728 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 02:18:30,728 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:18:30,728 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:18:30,729 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 02:18:30,729 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 02:18:30,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 02:18:30,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:18:30,730 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 02:18:30,731 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:18:30,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 02:18:30,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 02:18:30,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 02:18:30,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 02:18:30,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 02:18:30,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:18:30,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:18:31,088 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:18:31,088 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 02:18:31,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:18:31 BoogieIcfgContainer [2020-09-25 02:18:31,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:18:31,101 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:18:31,101 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:18:31,104 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:18:31,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:18:30" (1/3) ... [2020-09-25 02:18:31,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f21e165 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:18:31, skipping insertion in model container [2020-09-25 02:18:31,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:30" (2/3) ... [2020-09-25 02:18:31,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f21e165 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:18:31, skipping insertion in model container [2020-09-25 02:18:31,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:18:31" (3/3) ... [2020-09-25 02:18:31,109 INFO L109 eAbstractionObserver]: Analyzing ICFG s1iff.c [2020-09-25 02:18:31,120 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:18:31,130 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:18:31,150 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:18:31,178 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:18:31,178 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:18:31,179 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:18:31,179 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:18:31,179 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:18:31,179 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:18:31,179 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:18:31,179 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:18:31,204 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-09-25 02:18:31,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-25 02:18:31,213 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:18:31,214 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 02:18:31,215 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:18:31,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:18:31,222 INFO L82 PathProgramCache]: Analyzing trace with hash 171473808, now seen corresponding path program 1 times [2020-09-25 02:18:31,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:18:31,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561930004] [2020-09-25 02:18:31,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:18:31,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:31,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:31,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:31,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:31,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 02:18:31,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:18:31,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-09-25 02:18:31,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:31,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:31,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-25 02:18:31,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:31,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 02:18:31,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:18:31,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:31,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:31,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:31,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:18:31,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:31,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 02:18:31,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:31,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:31,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:31,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:31,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:18:31,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 02:18:31,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:31,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:31,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:31,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:18:31,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:31,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 02:18:31,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:31,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:31,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:31,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:31,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:18:31,811 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 02:18:31,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561930004] [2020-09-25 02:18:31,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:18:31,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 02:18:31,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65051946] [2020-09-25 02:18:31,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 02:18:31,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:18:31,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 02:18:31,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 02:18:31,847 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2020-09-25 02:18:32,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:18:32,041 INFO L93 Difference]: Finished difference Result 113 states and 126 transitions. [2020-09-25 02:18:32,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 02:18:32,043 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-09-25 02:18:32,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:18:32,055 INFO L225 Difference]: With dead ends: 113 [2020-09-25 02:18:32,055 INFO L226 Difference]: Without dead ends: 53 [2020-09-25 02:18:32,060 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 02:18:32,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-25 02:18:32,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-25 02:18:32,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-25 02:18:32,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-09-25 02:18:32,116 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 31 [2020-09-25 02:18:32,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:18:32,117 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-09-25 02:18:32,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 02:18:32,117 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-09-25 02:18:32,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-25 02:18:32,119 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:18:32,119 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 02:18:32,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:18:32,120 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:18:32,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:18:32,120 INFO L82 PathProgramCache]: Analyzing trace with hash 921692051, now seen corresponding path program 1 times [2020-09-25 02:18:32,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:18:32,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777767911] [2020-09-25 02:18:32,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:18:32,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:32,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:32,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:32,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:32,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 02:18:32,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:18:32,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 490 [2020-09-25 02:18:32,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:32,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:18:32,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 02:18:32,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 02:18:32,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 02:18:32,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:18:32,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:32,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:32,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:32,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:18:32,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:32,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 02:18:32,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:32,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:32,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:32,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:32,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 02:18:32,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 02:18:32,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:32,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:32,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:32,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:18:32,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:32,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 02:18:32,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:32,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:18:32,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:32,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:18:32,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:18:32,781 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 02:18:32,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [777767911] [2020-09-25 02:18:32,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:18:32,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:18:32,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686717479] [2020-09-25 02:18:32,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:18:32,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:18:32,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:18:32,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:18:32,791 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 5 states. [2020-09-25 02:18:32,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:18:32,988 INFO L93 Difference]: Finished difference Result 80 states and 85 transitions. [2020-09-25 02:18:32,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:18:32,989 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-09-25 02:18:32,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:18:32,991 INFO L225 Difference]: With dead ends: 80 [2020-09-25 02:18:32,991 INFO L226 Difference]: Without dead ends: 55 [2020-09-25 02:18:32,993 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 02:18:32,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-25 02:18:33,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-25 02:18:33,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 02:18:33,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2020-09-25 02:18:33,003 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 31 [2020-09-25 02:18:33,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:18:33,004 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2020-09-25 02:18:33,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:18:33,004 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2020-09-25 02:18:33,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 02:18:33,006 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:18:33,006 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 02:18:33,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:18:33,007 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:18:33,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:18:33,007 INFO L82 PathProgramCache]: Analyzing trace with hash -827220298, now seen corresponding path program 1 times [2020-09-25 02:18:33,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:18:33,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2142500283] [2020-09-25 02:18:33,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:18:33,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:33,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:33,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:33,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:34,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:34,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:35,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:35,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:36,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:36,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:36,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:37,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:37,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:37,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:38,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:38,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 02:18:38,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 02:18:38,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 02:18:38,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:38,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 02:18:38,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 02:18:38,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 02:18:38,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:18:38,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:18:38,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:38,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:38,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:38,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:18:38,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:38,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:18:38,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:38,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:38,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:38,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:38,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:18:38,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 02:18:38,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:38,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:38,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:38,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:18:38,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:38,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:18:38,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:38,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:38,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:38,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:38,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:18:38,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:18:38,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2142500283] [2020-09-25 02:18:38,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:18:38,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 02:18:38,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559909941] [2020-09-25 02:18:38,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 02:18:38,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:18:38,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 02:18:38,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2020-09-25 02:18:38,552 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 17 states. [2020-09-25 02:18:39,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:18:39,356 INFO L93 Difference]: Finished difference Result 84 states and 87 transitions. [2020-09-25 02:18:39,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 02:18:39,356 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 48 [2020-09-25 02:18:39,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:18:39,358 INFO L225 Difference]: With dead ends: 84 [2020-09-25 02:18:39,358 INFO L226 Difference]: Without dead ends: 78 [2020-09-25 02:18:39,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=125, Invalid=631, Unknown=0, NotChecked=0, Total=756 [2020-09-25 02:18:39,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-25 02:18:39,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 67. [2020-09-25 02:18:39,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-25 02:18:39,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2020-09-25 02:18:39,369 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 48 [2020-09-25 02:18:39,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:18:39,370 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2020-09-25 02:18:39,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 02:18:39,370 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2020-09-25 02:18:39,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 02:18:39,372 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:18:39,372 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 02:18:39,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:18:39,373 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:18:39,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:18:39,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1272927570, now seen corresponding path program 1 times [2020-09-25 02:18:39,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:18:39,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365545539] [2020-09-25 02:18:39,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:18:39,391 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-25 02:18:39,392 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-25 02:18:39,392 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 02:18:39,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:18:39,421 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-25 02:18:39,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:18:39 BoogieIcfgContainer [2020-09-25 02:18:39,421 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 02:18:39,425 INFO L168 Benchmark]: Toolchain (without parser) took 9275.88 ms. Allocated memory was 141.0 MB in the beginning and 277.3 MB in the end (delta: 136.3 MB). Free memory was 104.6 MB in the beginning and 162.4 MB in the end (delta: -57.8 MB). Peak memory consumption was 78.5 MB. Max. memory is 7.1 GB. [2020-09-25 02:18:39,426 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-25 02:18:39,427 INFO L168 Benchmark]: CACSL2BoogieTranslator took 353.02 ms. Allocated memory is still 141.0 MB. Free memory was 104.0 MB in the beginning and 93.4 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-09-25 02:18:39,428 INFO L168 Benchmark]: Boogie Preprocessor took 139.92 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 93.4 MB in the beginning and 181.3 MB in the end (delta: -87.8 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-09-25 02:18:39,429 INFO L168 Benchmark]: RCFGBuilder took 443.18 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 162.0 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. [2020-09-25 02:18:39,430 INFO L168 Benchmark]: TraceAbstraction took 8320.38 ms. Allocated memory was 203.9 MB in the beginning and 277.3 MB in the end (delta: 73.4 MB). Free memory was 161.4 MB in the beginning and 162.4 MB in the end (delta: -1.0 MB). Peak memory consumption was 72.4 MB. Max. memory is 7.1 GB. [2020-09-25 02:18:39,434 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 353.02 ms. Allocated memory is still 141.0 MB. Free memory was 104.0 MB in the beginning and 93.4 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 139.92 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 93.4 MB in the beginning and 181.3 MB in the end (delta: -87.8 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 443.18 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 162.0 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8320.38 ms. Allocated memory was 203.9 MB in the beginning and 277.3 MB in the end (delta: 73.4 MB). Free memory was 161.4 MB in the beginning and 162.4 MB in the end (delta: -1.0 MB). Peak memory consumption was 72.4 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