/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/s1liff.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 13:51:58,761 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:51:58,764 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:51:58,797 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 13:51:58,798 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 13:51:58,799 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 13:51:58,801 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 13:51:58,803 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 13:51:58,805 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 13:51:58,807 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 13:51:58,808 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 13:51:58,809 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 13:51:58,810 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 13:51:58,811 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 13:51:58,812 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 13:51:58,814 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 13:51:58,815 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 13:51:58,816 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 13:51:58,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 13:51:58,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 13:51:58,830 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 13:51:58,831 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 13:51:58,833 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 13:51:58,834 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 13:51:58,837 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 13:51:58,846 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:51:58,847 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:51:58,848 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:51:58,849 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 [2021-02-23 13:51:58,875 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:51:58,875 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:51:58,877 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:51:58,877 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:51:58,877 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:51:58,878 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:51:58,878 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:51:58,878 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:51:58,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:51:58,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:51:58,879 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:51:58,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:51:58,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:51:58,879 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:51:58,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:51:58,879 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:51:58,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:51:58,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:51:58,880 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:51:58,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:51:58,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:51:58,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:51:58,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:51:58,881 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:51:58,881 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:51:58,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:51:58,882 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:51:58,882 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:51:58,882 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:51:59,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:51:59,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:51:59,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:51:59,308 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:51:59,308 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:51:59,309 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s1liff.c [2021-02-23 13:51:59,394 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc8f97c71/13bff06ea92d4fbfb05428dbdd42b6b8/FLAGfbf7d79aa [2021-02-23 13:51:59,957 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:51:59,958 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s1liff.c [2021-02-23 13:51:59,971 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc8f97c71/13bff06ea92d4fbfb05428dbdd42b6b8/FLAGfbf7d79aa [2021-02-23 13:52:00,356 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc8f97c71/13bff06ea92d4fbfb05428dbdd42b6b8 [2021-02-23 13:52:00,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:52:00,376 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:52:00,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:52:00,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:52:00,383 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:52:00,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:52:00" (1/1) ... [2021-02-23 13:52:00,386 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b56f2d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:00, skipping insertion in model container [2021-02-23 13:52:00,386 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:52:00" (1/1) ... [2021-02-23 13:52:00,394 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:52:00,415 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:52:00,563 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s1liff.c[589,602] [2021-02-23 13:52:00,584 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:52:00,593 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:52:00,608 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s1liff.c[589,602] [2021-02-23 13:52:00,618 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:52:00,636 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:52:00,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:00 WrapperNode [2021-02-23 13:52:00,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:52:00,638 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:52:00,638 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:52:00,638 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:52:00,651 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:00" (1/1) ... [2021-02-23 13:52:00,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:00" (1/1) ... [2021-02-23 13:52:00,660 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:00" (1/1) ... [2021-02-23 13:52:00,661 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:00" (1/1) ... [2021-02-23 13:52:00,670 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:00" (1/1) ... [2021-02-23 13:52:00,676 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:00" (1/1) ... [2021-02-23 13:52:00,678 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:00" (1/1) ... [2021-02-23 13:52:00,680 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:52:00,682 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:52:00,682 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:52:00,682 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:52:00,683 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:00" (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 [2021-02-23 13:52:00,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:52:00,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:52:00,787 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:52:00,787 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 13:52:00,787 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 13:52:00,788 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:52:00,788 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:52:00,788 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:52:00,788 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:52:00,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:52:00,788 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 13:52:00,789 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 13:52:00,789 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 13:52:00,789 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 13:52:00,789 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:52:00,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 13:52:00,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:52:00,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:52:00,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:52:00,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:52:00,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:52:00,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:52:01,334 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:52:01,335 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-23 13:52:01,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:52:01 BoogieIcfgContainer [2021-02-23 13:52:01,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:52:01,338 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:52:01,338 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:52:01,341 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:52:01,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:52:00" (1/3) ... [2021-02-23 13:52:01,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fa8925a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:52:01, skipping insertion in model container [2021-02-23 13:52:01,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:00" (2/3) ... [2021-02-23 13:52:01,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fa8925a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:52:01, skipping insertion in model container [2021-02-23 13:52:01,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:52:01" (3/3) ... [2021-02-23 13:52:01,345 INFO L111 eAbstractionObserver]: Analyzing ICFG s1liff.c [2021-02-23 13:52:01,358 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:52:01,375 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:52:01,417 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:52:01,461 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:52:01,461 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:52:01,461 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:52:01,462 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:52:01,462 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:52:01,462 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:52:01,462 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:52:01,462 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:52:01,485 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2021-02-23 13:52:01,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-02-23 13:52:01,493 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:52:01,494 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] [2021-02-23 13:52:01,495 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:52:01,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:52:01,505 INFO L82 PathProgramCache]: Analyzing trace with hash -378919619, now seen corresponding path program 1 times [2021-02-23 13:52:01,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:52:01,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098979838] [2021-02-23 13:52:01,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:52:01,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:52:01,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:01,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:01,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:01,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:01,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:52:01,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:52:01,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:01,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:01,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-23 13:52:01,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:52:01,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:01,983 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:01,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:01,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:01,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:52:01,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098979838] [2021-02-23 13:52:01,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:52:01,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 13:52:02,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324276088] [2021-02-23 13:52:02,006 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 13:52:02,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:52:02,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 13:52:02,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 13:52:02,025 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2021-02-23 13:52:02,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:52:02,236 INFO L93 Difference]: Finished difference Result 60 states and 77 transitions. [2021-02-23 13:52:02,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 13:52:02,238 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2021-02-23 13:52:02,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:52:02,247 INFO L225 Difference]: With dead ends: 60 [2021-02-23 13:52:02,247 INFO L226 Difference]: Without dead ends: 28 [2021-02-23 13:52:02,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 13:52:02,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-02-23 13:52:02,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-02-23 13:52:02,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-02-23 13:52:02,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2021-02-23 13:52:02,312 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 23 [2021-02-23 13:52:02,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:52:02,312 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2021-02-23 13:52:02,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 13:52:02,313 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-02-23 13:52:02,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-02-23 13:52:02,314 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:52:02,314 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] [2021-02-23 13:52:02,315 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:52:02,315 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:52:02,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:52:02,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1390036869, now seen corresponding path program 1 times [2021-02-23 13:52:02,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:52:02,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930200207] [2021-02-23 13:52:02,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:52:02,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:52:02,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:02,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:02,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:02,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:02,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:02,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:52:02,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:02,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:02,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:52:02,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:52:02,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:02,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:02,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-23 13:52:02,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:52:02,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:02,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:02,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:52:02,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930200207] [2021-02-23 13:52:02,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:52:02,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 13:52:02,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431546064] [2021-02-23 13:52:02,537 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 13:52:02,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:52:02,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 13:52:02,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-23 13:52:02,539 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2021-02-23 13:52:02,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:52:02,806 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2021-02-23 13:52:02,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 13:52:02,807 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2021-02-23 13:52:02,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:52:02,808 INFO L225 Difference]: With dead ends: 48 [2021-02-23 13:52:02,808 INFO L226 Difference]: Without dead ends: 35 [2021-02-23 13:52:02,809 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 [2021-02-23 13:52:02,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-02-23 13:52:02,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2021-02-23 13:52:02,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-02-23 13:52:02,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2021-02-23 13:52:02,819 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 23 [2021-02-23 13:52:02,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:52:02,819 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2021-02-23 13:52:02,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 13:52:02,820 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2021-02-23 13:52:02,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-02-23 13:52:02,821 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:52:02,821 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] [2021-02-23 13:52:02,821 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 13:52:02,822 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:52:02,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:52:02,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1506162525, now seen corresponding path program 1 times [2021-02-23 13:52:02,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:52:02,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105175526] [2021-02-23 13:52:02,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:52:02,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:52:02,904 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:52:02,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:52:02,938 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:52:02,978 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-23 13:52:02,978 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 13:52:02,979 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 13:52:03,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:52:03 BoogieIcfgContainer [2021-02-23 13:52:03,071 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:52:03,073 INFO L168 Benchmark]: Toolchain (without parser) took 2710.43 ms. Allocated memory was 159.4 MB in the beginning and 191.9 MB in the end (delta: 32.5 MB). Free memory was 135.3 MB in the beginning and 174.4 MB in the end (delta: -39.0 MB). Peak memory consumption was 67.7 MB. Max. memory is 8.0 GB. [2021-02-23 13:52:03,074 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 159.4 MB. Free memory is still 131.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:52:03,075 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.52 ms. Allocated memory is still 159.4 MB. Free memory was 134.2 MB in the beginning and 123.8 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 13:52:03,076 INFO L168 Benchmark]: Boogie Preprocessor took 42.85 ms. Allocated memory is still 159.4 MB. Free memory was 123.8 MB in the beginning and 122.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 13:52:03,076 INFO L168 Benchmark]: RCFGBuilder took 654.85 ms. Allocated memory is still 159.4 MB. Free memory was 122.1 MB in the beginning and 142.1 MB in the end (delta: -20.1 MB). Peak memory consumption was 21.3 MB. Max. memory is 8.0 GB. [2021-02-23 13:52:03,078 INFO L168 Benchmark]: TraceAbstraction took 1733.69 ms. Allocated memory was 159.4 MB in the beginning and 191.9 MB in the end (delta: 32.5 MB). Free memory was 141.6 MB in the beginning and 174.4 MB in the end (delta: -32.8 MB). Peak memory consumption was 72.6 MB. Max. memory is 8.0 GB. [2021-02-23 13:52:03,081 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 159.4 MB. Free memory is still 131.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 258.52 ms. Allocated memory is still 159.4 MB. Free memory was 134.2 MB in the beginning and 123.8 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 42.85 ms. Allocated memory is still 159.4 MB. Free memory was 123.8 MB in the beginning and 122.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 654.85 ms. Allocated memory is still 159.4 MB. Free memory was 122.1 MB in the beginning and 142.1 MB in the end (delta: -20.1 MB). Peak memory consumption was 21.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1733.69 ms. Allocated memory was 159.4 MB in the beginning and 191.9 MB in the end (delta: 32.5 MB). Free memory was 141.6 MB in the beginning and 174.4 MB in the end (delta: -32.8 MB). Peak memory consumption was 72.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; VAL [\old(N)=51, N=0] [L23] N = __VERIFIER_nondet_int() [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; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = N [L32] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={11:0}] [L32] COND TRUE i