/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.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/sina5f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 06:34:51,617 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 06:34:51,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 06:34:51,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 06:34:51,677 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 06:34:51,681 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 06:34:51,686 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 06:34:51,693 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 06:34:51,697 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 06:34:51,704 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 06:34:51,705 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 06:34:51,706 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 06:34:51,707 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 06:34:51,710 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 06:34:51,712 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 06:34:51,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 06:34:51,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 06:34:51,718 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 06:34:51,725 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 06:34:51,732 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 06:34:51,734 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 06:34:51,736 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 06:34:51,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 06:34:51,739 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 06:34:51,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-07 06:34:51,762 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-07 06:34:51,763 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-07 06:34:51,765 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-07 06:34:51,765 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-07 06:34:51,766 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-07 06:34:51,767 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 06:34:51,768 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 06:34:51,770 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 06:34:51,770 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 06:34:51,772 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 06:34:51,772 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 06:34:51,773 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 06:34:51,773 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 06:34:51,773 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 06:34:51,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 06:34:51,775 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 06:34:51,776 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 06:34:51,798 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 06:34:51,799 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 06:34:51,803 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 06:34:51,803 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 06:34:51,804 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 06:34:51,804 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 06:34:51,804 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 06:34:51,804 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 06:34:51,805 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 06:34:51,805 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 06:34:51,806 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 06:34:51,806 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 06:34:51,807 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 06:34:51,807 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 06:34:51,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 06:34:51,808 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 06:34:51,808 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 06:34:51,808 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 06:34:51,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 06:34:51,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 06:34:51,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 06:34:51,809 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 06:34:51,810 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 06:34:52,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 06:34:52,264 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 06:34:52,267 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 06:34:52,268 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 06:34:52,269 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 06:34:52,270 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina5f.c [2020-11-07 06:34:52,358 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/172a9bb59/78508dfb600f405da1b4b8fb33f09588/FLAGed8650c1e [2020-11-07 06:34:52,960 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 06:34:52,960 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sina5f.c [2020-11-07 06:34:52,968 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/172a9bb59/78508dfb600f405da1b4b8fb33f09588/FLAGed8650c1e [2020-11-07 06:34:53,363 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/172a9bb59/78508dfb600f405da1b4b8fb33f09588 [2020-11-07 06:34:53,366 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 06:34:53,374 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 06:34:53,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 06:34:53,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 06:34:53,383 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 06:34:53,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:34:53" (1/1) ... [2020-11-07 06:34:53,387 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34d8c4f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:34:53, skipping insertion in model container [2020-11-07 06:34:53,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:34:53" (1/1) ... [2020-11-07 06:34:53,396 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 06:34:53,416 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 06:34:53,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 06:34:53,634 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 06:34:53,660 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 06:34:53,685 INFO L208 MainTranslator]: Completed translation [2020-11-07 06:34:53,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:34:53 WrapperNode [2020-11-07 06:34:53,686 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 06:34:53,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 06:34:53,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 06:34:53,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 06:34:53,701 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:34:53" (1/1) ... [2020-11-07 06:34:53,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:34:53" (1/1) ... [2020-11-07 06:34:53,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:34:53" (1/1) ... [2020-11-07 06:34:53,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:34:53" (1/1) ... [2020-11-07 06:34:53,720 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:34:53" (1/1) ... [2020-11-07 06:34:53,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:34:53" (1/1) ... [2020-11-07 06:34:53,731 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:34:53" (1/1) ... [2020-11-07 06:34:53,734 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 06:34:53,735 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 06:34:53,735 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 06:34:53,736 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 06:34:53,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:34:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-11-07 06:34:53,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 06:34:53,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 06:34:53,813 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 06:34:53,813 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 06:34:53,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 06:34:53,814 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 06:34:53,814 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 06:34:53,814 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 06:34:53,814 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 06:34:53,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 06:34:53,815 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 06:34:53,815 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 06:34:53,815 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 06:34:53,815 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-07 06:34:53,815 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 06:34:53,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-07 06:34:53,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 06:34:53,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 06:34:53,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 06:34:53,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 06:34:53,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 06:34:53,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 06:34:54,337 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 06:34:54,339 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-07 06:34:54,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:34:54 BoogieIcfgContainer [2020-11-07 06:34:54,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 06:34:54,344 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 06:34:54,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 06:34:54,349 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 06:34:54,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:34:53" (1/3) ... [2020-11-07 06:34:54,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f7df86a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:34:54, skipping insertion in model container [2020-11-07 06:34:54,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:34:53" (2/3) ... [2020-11-07 06:34:54,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f7df86a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:34:54, skipping insertion in model container [2020-11-07 06:34:54,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:34:54" (3/3) ... [2020-11-07 06:34:54,353 INFO L111 eAbstractionObserver]: Analyzing ICFG sina5f.c [2020-11-07 06:34:54,369 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 06:34:54,373 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 06:34:54,386 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 06:34:54,457 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 06:34:54,457 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 06:34:54,457 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 06:34:54,457 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 06:34:54,457 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 06:34:54,458 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 06:34:54,458 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 06:34:54,458 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 06:34:54,482 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states. [2020-11-07 06:34:54,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-07 06:34:54,497 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:34:54,498 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] [2020-11-07 06:34:54,498 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:34:54,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:34:54,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1739434755, now seen corresponding path program 1 times [2020-11-07 06:34:54,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:34:54,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689147510] [2020-11-07 06:34:54,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:34:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:34:54,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:34:54,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:34:54,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-11-07 06:34:54,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:34:54,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:34:54,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1689147510] [2020-11-07 06:34:54,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:34:54,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 06:34:54,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103275177] [2020-11-07 06:34:54,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 06:34:54,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:34:54,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 06:34:54,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 06:34:54,944 INFO L87 Difference]: Start difference. First operand 98 states. Second operand 3 states. [2020-11-07 06:34:55,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:34:55,280 INFO L93 Difference]: Finished difference Result 171 states and 199 transitions. [2020-11-07 06:34:55,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 06:34:55,282 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-11-07 06:34:55,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:34:55,292 INFO L225 Difference]: With dead ends: 171 [2020-11-07 06:34:55,292 INFO L226 Difference]: Without dead ends: 86 [2020-11-07 06:34:55,296 INFO L677 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 [2020-11-07 06:34:55,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-11-07 06:34:55,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-11-07 06:34:55,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-11-07 06:34:55,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 91 transitions. [2020-11-07 06:34:55,351 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 91 transitions. Word has length 47 [2020-11-07 06:34:55,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:34:55,352 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 91 transitions. [2020-11-07 06:34:55,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 06:34:55,352 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 91 transitions. [2020-11-07 06:34:55,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-07 06:34:55,355 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:34:55,355 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] [2020-11-07 06:34:55,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 06:34:55,355 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:34:55,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:34:55,356 INFO L82 PathProgramCache]: Analyzing trace with hash 871341980, now seen corresponding path program 1 times [2020-11-07 06:34:55,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:34:55,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1427962946] [2020-11-07 06:34:55,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:34:55,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:34:55,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:34:55,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:34:55,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-11-07 06:34:55,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:34:55,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:34:55,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1427962946] [2020-11-07 06:34:55,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:34:55,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 06:34:55,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133991926] [2020-11-07 06:34:55,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 06:34:55,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:34:55,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 06:34:55,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-07 06:34:55,590 INFO L87 Difference]: Start difference. First operand 86 states and 91 transitions. Second operand 5 states. [2020-11-07 06:34:56,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:34:56,104 INFO L93 Difference]: Finished difference Result 175 states and 190 transitions. [2020-11-07 06:34:56,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 06:34:56,105 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2020-11-07 06:34:56,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:34:56,108 INFO L225 Difference]: With dead ends: 175 [2020-11-07 06:34:56,109 INFO L226 Difference]: Without dead ends: 124 [2020-11-07 06:34:56,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-07 06:34:56,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-11-07 06:34:56,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 91. [2020-11-07 06:34:56,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-11-07 06:34:56,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 96 transitions. [2020-11-07 06:34:56,134 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 96 transitions. Word has length 47 [2020-11-07 06:34:56,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:34:56,134 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 96 transitions. [2020-11-07 06:34:56,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 06:34:56,135 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 96 transitions. [2020-11-07 06:34:56,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-11-07 06:34:56,138 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:34:56,138 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, 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] [2020-11-07 06:34:56,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 06:34:56,138 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:34:56,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:34:56,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1420071643, now seen corresponding path program 1 times [2020-11-07 06:34:56,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:34:56,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262336978] [2020-11-07 06:34:56,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:34:56,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 06:34:56,214 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 06:34:56,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 06:34:56,272 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 06:34:56,339 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 06:34:56,339 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 06:34:56,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 06:34:56,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:34:56 BoogieIcfgContainer [2020-11-07 06:34:56,446 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 06:34:56,449 INFO L168 Benchmark]: Toolchain (without parser) took 3079.35 ms. Allocated memory was 160.4 MB in the beginning and 213.9 MB in the end (delta: 53.5 MB). Free memory was 136.7 MB in the beginning and 161.0 MB in the end (delta: -24.3 MB). Peak memory consumption was 29.5 MB. Max. memory is 8.0 GB. [2020-11-07 06:34:56,450 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 160.4 MB. Free memory is still 135.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 06:34:56,451 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.03 ms. Allocated memory is still 160.4 MB. Free memory was 136.0 MB in the beginning and 125.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-07 06:34:56,452 INFO L168 Benchmark]: Boogie Preprocessor took 47.54 ms. Allocated memory is still 160.4 MB. Free memory was 125.8 MB in the beginning and 123.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 06:34:56,453 INFO L168 Benchmark]: RCFGBuilder took 606.25 ms. Allocated memory is still 160.4 MB. Free memory was 123.9 MB in the beginning and 100.6 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-11-07 06:34:56,455 INFO L168 Benchmark]: TraceAbstraction took 2102.19 ms. Allocated memory was 160.4 MB in the beginning and 213.9 MB in the end (delta: 53.5 MB). Free memory was 100.3 MB in the beginning and 161.0 MB in the end (delta: -60.7 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 06:34:56,459 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 160.4 MB. Free memory is still 135.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 308.03 ms. Allocated memory is still 160.4 MB. Free memory was 136.0 MB in the beginning and 125.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 47.54 ms. Allocated memory is still 160.4 MB. Free memory was 125.8 MB in the beginning and 123.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 606.25 ms. Allocated memory is still 160.4 MB. Free memory was 123.9 MB in the beginning and 100.6 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2102.19 ms. Allocated memory was 160.4 MB in the beginning and 213.9 MB in the end (delta: 53.5 MB). Free memory was 100.3 MB in the beginning and 161.0 MB in the end (delta: -60.7 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; VAL [\old(N)=51, N=0] [L23] N = __VERIFIER_nondet_int() VAL [\old(N)=0, __VERIFIER_nondet_int()=1, N=1] [L24] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L27] int i; VAL [\old(N)=0, N=1] [L28] long long sum[1]; VAL [\old(N)=0, N=1, sum={13:0}] [L29] long long *a = malloc(sizeof(long long)*N); VAL [\old(N)=0, a={-1:0}, malloc(sizeof(long long)*N)={-1:0}, N=1, sum={13:0}] [L30] long long *b = malloc(sizeof(long long)*N); VAL [\old(N)=0, a={-1:0}, b={11:0}, malloc(sizeof(long long)*N)={-1:0}, malloc(sizeof(long long)*N)={11:0}, N=1, sum={13:0}] [L32] sum[0] = 0 VAL [\old(N)=0, a={-1:0}, b={11:0}, malloc(sizeof(long long)*N)={-1:0}, malloc(sizeof(long long)*N)={11:0}, N=1, sum={13:0}] [L33] i=0 VAL [\old(N)=0, a={-1:0}, b={11:0}, i=0, malloc(sizeof(long long)*N)={-1:0}, malloc(sizeof(long long)*N)={11:0}, N=1, sum={13:0}] [L33] COND TRUE i