/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/modpf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:56:30,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:56:30,395 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:56:30,435 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:56:30,436 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:56:30,444 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:56:30,445 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:56:30,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:56:30,451 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:56:30,454 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:56:30,455 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:56:30,457 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:56:30,457 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:56:30,460 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:56:30,462 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:56:30,464 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:56:30,465 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:56:30,466 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:56:30,468 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:56:30,476 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:56:30,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:56:30,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:56:30,481 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:56:30,481 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:56:30,488 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 16:56:30,488 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 16:56:30,488 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 16:56:30,489 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 16:56:30,490 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 16:56:30,491 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 16:56:30,491 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 16:56:30,491 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 16:56:30,497 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 16:56:30,498 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 16:56:30,500 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 16:56:30,500 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 16:56:30,501 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 16:56:30,501 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 16:56:30,501 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:56:30,502 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:56:30,503 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:56:30,504 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 [2020-08-22 16:56:30,541 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:56:30,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:56:30,543 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:56:30,544 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:56:30,544 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:56:30,544 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:56:30,544 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:56:30,545 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:56:30,545 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:56:30,545 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:56:30,546 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:56:30,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:56:30,546 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:56:30,547 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:56:30,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:56:30,547 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:56:30,547 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:56:30,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:56:30,548 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:56:30,548 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:56:30,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:56:30,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:56:30,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:56:30,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:56:30,549 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:56:30,549 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:56:30,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:56:30,549 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:56:30,550 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:56:30,550 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:56:30,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:56:30,852 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:56:30,855 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:56:30,857 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:56:30,857 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:56:30,858 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/modpf.c [2020-08-22 16:56:30,931 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1e899719/80a9805c43c34c10ab354e13e199f16f/FLAG4baeaa8cd [2020-08-22 16:56:31,395 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:56:31,396 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/modpf.c [2020-08-22 16:56:31,402 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1e899719/80a9805c43c34c10ab354e13e199f16f/FLAG4baeaa8cd [2020-08-22 16:56:31,824 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1e899719/80a9805c43c34c10ab354e13e199f16f [2020-08-22 16:56:31,831 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:56:31,833 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:56:31,834 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:56:31,834 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:56:31,838 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:56:31,839 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:56:31" (1/1) ... [2020-08-22 16:56:31,842 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2641392f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:31, skipping insertion in model container [2020-08-22 16:56:31,842 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:56:31" (1/1) ... [2020-08-22 16:56:31,850 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:56:31,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:56:32,063 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:56:32,072 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:56:32,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:56:32,188 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:56:32,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:32 WrapperNode [2020-08-22 16:56:32,189 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:56:32,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:56:32,190 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:56:32,190 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:56:32,200 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:32" (1/1) ... [2020-08-22 16:56:32,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:32" (1/1) ... [2020-08-22 16:56:32,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:32" (1/1) ... [2020-08-22 16:56:32,211 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:32" (1/1) ... [2020-08-22 16:56:32,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:32" (1/1) ... [2020-08-22 16:56:32,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:32" (1/1) ... [2020-08-22 16:56:32,227 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:32" (1/1) ... [2020-08-22 16:56:32,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:56:32,230 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:56:32,230 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:56:32,230 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:56:32,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:32" (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 [2020-08-22 16:56:32,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:56:32,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:56:32,291 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 16:56:32,291 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 16:56:32,291 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:56:32,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:56:32,291 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 16:56:32,291 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 16:56:32,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 16:56:32,292 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 16:56:32,292 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 16:56:32,292 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:56:32,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 16:56:32,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 16:56:32,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 16:56:32,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 16:56:32,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 16:56:32,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:56:32,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:56:32,599 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:56:32,600 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-22 16:56:32,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:56:32 BoogieIcfgContainer [2020-08-22 16:56:32,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:56:32,605 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:56:32,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:56:32,608 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:56:32,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:56:31" (1/3) ... [2020-08-22 16:56:32,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67df5fc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:56:32, skipping insertion in model container [2020-08-22 16:56:32,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:32" (2/3) ... [2020-08-22 16:56:32,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67df5fc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:56:32, skipping insertion in model container [2020-08-22 16:56:32,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:56:32" (3/3) ... [2020-08-22 16:56:32,612 INFO L109 eAbstractionObserver]: Analyzing ICFG modpf.c [2020-08-22 16:56:32,623 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:56:32,630 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:56:32,645 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:56:32,668 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:56:32,668 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:56:32,668 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:56:32,668 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:56:32,668 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:56:32,668 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:56:32,668 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:56:32,669 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:56:32,685 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-08-22 16:56:32,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-22 16:56:32,692 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:32,693 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] [2020-08-22 16:56:32,693 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:32,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:32,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1314760119, now seen corresponding path program 1 times [2020-08-22 16:56:32,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:32,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224570283] [2020-08-22 16:56:32,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:32,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:32,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:56:32,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:32,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 16:56:32,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:32,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:56:32,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224570283] [2020-08-22 16:56:32,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:56:32,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 16:56:32,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223331279] [2020-08-22 16:56:32,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 16:56:32,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:56:32,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 16:56:32,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 16:56:32,921 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2020-08-22 16:56:33,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:56:33,076 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2020-08-22 16:56:33,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 16:56:33,078 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-08-22 16:56:33,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:56:33,088 INFO L225 Difference]: With dead ends: 58 [2020-08-22 16:56:33,089 INFO L226 Difference]: Without dead ends: 29 [2020-08-22 16:56:33,093 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 [2020-08-22 16:56:33,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-08-22 16:56:33,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-08-22 16:56:33,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-08-22 16:56:33,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-08-22 16:56:33,131 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2020-08-22 16:56:33,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:56:33,132 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-08-22 16:56:33,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 16:56:33,132 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-08-22 16:56:33,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-22 16:56:33,133 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:33,133 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] [2020-08-22 16:56:33,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:56:33,134 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:33,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:33,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1901566133, now seen corresponding path program 1 times [2020-08-22 16:56:33,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:33,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071166592] [2020-08-22 16:56:33,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:33,161 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 16:56:33,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [514373130] [2020-08-22 16:56:33,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-08-22 16:56:33,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:33,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2020-08-22 16:56:33,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:56:33,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:56:33,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071166592] [2020-08-22 16:56:33,303 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-08-22 16:56:33,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514373130] [2020-08-22 16:56:33,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:56:33,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 16:56:33,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621393785] [2020-08-22 16:56:33,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 16:56:33,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:56:33,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 16:56:33,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 16:56:33,307 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 4 states. [2020-08-22 16:56:33,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:56:33,387 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2020-08-22 16:56:33,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 16:56:33,389 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-08-22 16:56:33,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:56:33,392 INFO L225 Difference]: With dead ends: 51 [2020-08-22 16:56:33,392 INFO L226 Difference]: Without dead ends: 37 [2020-08-22 16:56:33,394 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 [2020-08-22 16:56:33,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-22 16:56:33,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2020-08-22 16:56:33,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-08-22 16:56:33,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-08-22 16:56:33,407 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 22 [2020-08-22 16:56:33,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:56:33,408 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-08-22 16:56:33,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 16:56:33,408 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-08-22 16:56:33,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-22 16:56:33,409 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:33,409 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] [2020-08-22 16:56:33,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-08-22 16:56:33,626 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:33,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:33,627 INFO L82 PathProgramCache]: Analyzing trace with hash -69884793, now seen corresponding path program 1 times [2020-08-22 16:56:33,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:33,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529152475] [2020-08-22 16:56:33,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:33,653 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 16:56:33,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1324951896] [2020-08-22 16:56:33,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-08-22 16:56:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:56:33,723 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:56:33,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:56:33,740 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:56:33,763 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-08-22 16:56:33,764 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 16:56:33,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:56:34,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:56:34 BoogieIcfgContainer [2020-08-22 16:56:34,014 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:56:34,017 INFO L168 Benchmark]: Toolchain (without parser) took 2183.03 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 103.8 MB in the beginning and 96.5 MB in the end (delta: 7.2 MB). Peak memory consumption was 70.1 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:34,018 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 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. [2020-08-22 16:56:34,019 INFO L168 Benchmark]: CACSL2BoogieTranslator took 355.17 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 103.6 MB in the beginning and 182.8 MB in the end (delta: -79.3 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:34,021 INFO L168 Benchmark]: Boogie Preprocessor took 40.19 ms. Allocated memory is still 203.9 MB. Free memory was 182.8 MB in the beginning and 180.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:34,022 INFO L168 Benchmark]: RCFGBuilder took 374.16 ms. Allocated memory is still 203.9 MB. Free memory was 180.4 MB in the beginning and 163.5 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:34,022 INFO L168 Benchmark]: TraceAbstraction took 1408.89 ms. Allocated memory is still 203.9 MB. Free memory was 162.8 MB in the beginning and 96.5 MB in the end (delta: 66.3 MB). Peak memory consumption was 66.3 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:34,027 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 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 355.17 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 103.6 MB in the beginning and 182.8 MB in the end (delta: -79.3 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 40.19 ms. Allocated memory is still 203.9 MB. Free memory was 182.8 MB in the beginning and 180.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 374.16 ms. Allocated memory is still 203.9 MB. Free memory was 180.4 MB in the beginning and 163.5 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1408.89 ms. Allocated memory is still 203.9 MB. Free memory was 162.8 MB in the beginning and 96.5 MB in the end (delta: 66.3 MB). Peak memory consumption was 66.3 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)=6, 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