/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 CAMEL_NO_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/modpf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 21:45:06,689 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 21:45:06,694 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 21:45:06,706 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 21:45:06,706 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 21:45:06,707 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 21:45:06,708 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 21:45:06,710 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 21:45:06,712 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 21:45:06,713 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 21:45:06,714 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 21:45:06,715 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 21:45:06,715 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 21:45:06,716 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 21:45:06,717 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 21:45:06,718 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 21:45:06,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 21:45:06,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 21:45:06,722 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 21:45:06,724 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 21:45:06,725 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 21:45:06,726 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 21:45:06,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 21:45:06,728 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 21:45:06,731 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-19 21:45:06,740 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 21:45:06,741 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 21:45:06,742 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 21:45:06,743 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-19 21:45:06,758 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 21:45:06,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 21:45:06,759 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 21:45:06,760 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 21:45:06,760 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 21:45:06,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 21:45:06,760 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 21:45:06,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 21:45:06,761 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 21:45:06,761 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 21:45:06,761 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 21:45:06,761 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 21:45:06,761 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 21:45:06,762 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 21:45:06,762 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 21:45:06,762 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 21:45:06,762 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 21:45:06,762 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 21:45:06,763 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 21:45:06,763 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 21:45:06,763 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 21:45:06,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 21:45:06,763 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 21:45:06,764 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 21:45:06,764 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 21:45:06,764 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 21:45:06,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 21:45:06,764 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 21:45:06,765 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 21:45:06,765 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_NO_AM [2020-07-19 21:45:07,036 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 21:45:07,050 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 21:45:07,053 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 21:45:07,054 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 21:45:07,055 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 21:45:07,055 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/modpf.c [2020-07-19 21:45:07,139 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32ddab61e/90afbd42d054427987b35162fb255981/FLAG1cb9030ef [2020-07-19 21:45:07,618 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 21:45:07,619 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/modpf.c [2020-07-19 21:45:07,627 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32ddab61e/90afbd42d054427987b35162fb255981/FLAG1cb9030ef [2020-07-19 21:45:07,986 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32ddab61e/90afbd42d054427987b35162fb255981 [2020-07-19 21:45:07,995 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 21:45:07,998 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 21:45:07,999 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 21:45:08,000 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 21:45:08,003 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 21:45:08,007 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:45:07" (1/1) ... [2020-07-19 21:45:08,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3217d41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:08, skipping insertion in model container [2020-07-19 21:45:08,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:45:07" (1/1) ... [2020-07-19 21:45:08,019 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 21:45:08,037 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 21:45:08,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:45:08,220 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 21:45:08,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:45:08,259 INFO L208 MainTranslator]: Completed translation [2020-07-19 21:45:08,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:08 WrapperNode [2020-07-19 21:45:08,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 21:45:08,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 21:45:08,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 21:45:08,261 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 21:45:08,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:08" (1/1) ... [2020-07-19 21:45:08,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:08" (1/1) ... [2020-07-19 21:45:08,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:08" (1/1) ... [2020-07-19 21:45:08,368 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:08" (1/1) ... [2020-07-19 21:45:08,375 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:08" (1/1) ... [2020-07-19 21:45:08,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:08" (1/1) ... [2020-07-19 21:45:08,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:08" (1/1) ... [2020-07-19 21:45:08,385 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 21:45:08,386 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 21:45:08,386 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 21:45:08,386 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 21:45:08,387 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:08" (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 [2020-07-19 21:45:08,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 21:45:08,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 21:45:08,446 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-19 21:45:08,446 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-19 21:45:08,446 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 21:45:08,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 21:45:08,446 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-19 21:45:08,447 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-19 21:45:08,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-19 21:45:08,448 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-19 21:45:08,448 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-19 21:45:08,448 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 21:45:08,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-19 21:45:08,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-19 21:45:08,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-19 21:45:08,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-19 21:45:08,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-19 21:45:08,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 21:45:08,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 21:45:08,719 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 21:45:08,719 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-19 21:45:08,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:45:08 BoogieIcfgContainer [2020-07-19 21:45:08,724 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 21:45:08,726 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 21:45:08,726 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 21:45:08,729 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 21:45:08,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:45:07" (1/3) ... [2020-07-19 21:45:08,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@117b2b55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:45:08, skipping insertion in model container [2020-07-19 21:45:08,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:08" (2/3) ... [2020-07-19 21:45:08,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@117b2b55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:45:08, skipping insertion in model container [2020-07-19 21:45:08,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:45:08" (3/3) ... [2020-07-19 21:45:08,733 INFO L109 eAbstractionObserver]: Analyzing ICFG modpf.c [2020-07-19 21:45:08,744 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 21:45:08,751 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 21:45:08,768 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 21:45:08,794 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 21:45:08,794 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 21:45:08,794 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 21:45:08,794 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 21:45:08,794 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 21:45:08,794 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 21:45:08,795 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 21:45:08,795 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 21:45:08,816 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-07-19 21:45:08,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-19 21:45:08,823 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:45:08,824 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] [2020-07-19 21:45:08,824 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:45:08,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:45:08,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1314760119, now seen corresponding path program 1 times [2020-07-19 21:45:08,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:45:08,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209027242] [2020-07-19 21:45:08,842 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@23f6d2f3 [2020-07-19 21:45:08,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:45:09,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:45:09,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:45:09,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:45:09,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209027242] [2020-07-19 21:45:09,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:45:09,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-19 21:45:09,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533998448] [2020-07-19 21:45:09,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-19 21:45:09,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:45:09,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-19 21:45:09,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 21:45:09,162 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2020-07-19 21:45:09,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:45:09,311 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2020-07-19 21:45:09,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-19 21:45:09,315 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-07-19 21:45:09,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:45:09,334 INFO L225 Difference]: With dead ends: 58 [2020-07-19 21:45:09,335 INFO L226 Difference]: Without dead ends: 29 [2020-07-19 21:45:09,343 INFO L675 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 [2020-07-19 21:45:09,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-07-19 21:45:09,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-07-19 21:45:09,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-19 21:45:09,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-07-19 21:45:09,402 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2020-07-19 21:45:09,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:45:09,403 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-07-19 21:45:09,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-19 21:45:09,404 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-07-19 21:45:09,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-19 21:45:09,405 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:45:09,406 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] [2020-07-19 21:45:09,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 21:45:09,407 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:45:09,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:45:09,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1901566133, now seen corresponding path program 1 times [2020-07-19 21:45:09,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:45:09,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861475848] [2020-07-19 21:45:09,409 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@23f6d2f3 [2020-07-19 21:45:09,446 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-19 21:45:09,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [101257114] [2020-07-19 21:45:09,447 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@23f6d2f3 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 21:45:09,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:45:09,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-19 21:45:09,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 21:45:09,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:45:09,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861475848] [2020-07-19 21:45:09,561 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-19 21:45:09,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101257114] [2020-07-19 21:45:09,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:45:09,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 21:45:09,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069631759] [2020-07-19 21:45:09,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 21:45:09,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:45:09,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 21:45:09,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-19 21:45:09,565 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 4 states. [2020-07-19 21:45:09,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:45:09,630 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2020-07-19 21:45:09,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-19 21:45:09,631 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-07-19 21:45:09,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:45:09,634 INFO L225 Difference]: With dead ends: 51 [2020-07-19 21:45:09,634 INFO L226 Difference]: Without dead ends: 37 [2020-07-19 21:45:09,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-19 21:45:09,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-19 21:45:09,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2020-07-19 21:45:09,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-07-19 21:45:09,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-07-19 21:45:09,654 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 22 [2020-07-19 21:45:09,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:45:09,654 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-07-19 21:45:09,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 21:45:09,655 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-07-19 21:45:09,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-19 21:45:09,659 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:45:09,659 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] [2020-07-19 21:45:09,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-19 21:45:09,875 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:45:09,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:45:09,876 INFO L82 PathProgramCache]: Analyzing trace with hash -69884793, now seen corresponding path program 1 times [2020-07-19 21:45:09,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:45:09,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666806382] [2020-07-19 21:45:09,878 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@23f6d2f3 [2020-07-19 21:45:09,912 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-19 21:45:09,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [186918269] [2020-07-19 21:45:09,918 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@23f6d2f3 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 21:45:09,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 21:45:09,978 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 21:45:09,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 21:45:09,996 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 21:45:10,021 INFO L174 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2020-07-19 21:45:10,022 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-19 21:45:10,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 21:45:10,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:45:10 BoogieIcfgContainer [2020-07-19 21:45:10,273 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 21:45:10,276 INFO L168 Benchmark]: Toolchain (without parser) took 2278.33 ms. Allocated memory was 143.7 MB in the beginning and 202.4 MB in the end (delta: 58.7 MB). Free memory was 101.7 MB in the beginning and 98.0 MB in the end (delta: 3.6 MB). Peak memory consumption was 62.4 MB. Max. memory is 7.1 GB. [2020-07-19 21:45:10,277 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 143.7 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-19 21:45:10,278 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.43 ms. Allocated memory is still 143.7 MB. Free memory was 101.3 MB in the beginning and 90.9 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-07-19 21:45:10,279 INFO L168 Benchmark]: Boogie Preprocessor took 125.07 ms. Allocated memory was 143.7 MB in the beginning and 202.4 MB in the end (delta: 58.7 MB). Free memory was 90.9 MB in the beginning and 180.3 MB in the end (delta: -89.5 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-07-19 21:45:10,280 INFO L168 Benchmark]: RCFGBuilder took 338.77 ms. Allocated memory is still 202.4 MB. Free memory was 180.3 MB in the beginning and 162.9 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. [2020-07-19 21:45:10,281 INFO L168 Benchmark]: TraceAbstraction took 1547.63 ms. Allocated memory is still 202.4 MB. Free memory was 162.9 MB in the beginning and 98.0 MB in the end (delta: 64.8 MB). Peak memory consumption was 64.8 MB. Max. memory is 7.1 GB. [2020-07-19 21:45:10,285 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 143.7 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 260.43 ms. Allocated memory is still 143.7 MB. Free memory was 101.3 MB in the beginning and 90.9 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.07 ms. Allocated memory was 143.7 MB in the beginning and 202.4 MB in the end (delta: 58.7 MB). Free memory was 90.9 MB in the beginning and 180.3 MB in the end (delta: -89.5 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 338.77 ms. Allocated memory is still 202.4 MB. Free memory was 180.3 MB in the beginning and 162.9 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1547.63 ms. Allocated memory is still 202.4 MB. Free memory was 162.9 MB in the beginning and 98.0 MB in the end (delta: 64.8 MB). Peak memory consumption was 64.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; VAL [\old(N)=7, N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L25] int i; [L26] int sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 0 [L30] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}] [L30] COND TRUE i