/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/res1of.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 13:51:52,802 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:51:52,806 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:51:52,866 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 13:51:52,866 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 13:51:52,870 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 13:51:52,874 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 13:51:52,882 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 13:51:52,906 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 13:51:52,913 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 13:51:52,914 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 13:51:52,916 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 13:51:52,917 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 13:51:52,926 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 13:51:52,928 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 13:51:52,932 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 13:51:52,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 13:51:52,941 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 13:51:52,943 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 13:51:52,947 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 13:51:52,952 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 13:51:52,954 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 13:51:52,955 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 13:51:52,956 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 13:51:52,962 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 13:51:52,971 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:51:52,972 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:51:52,973 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:51:52,974 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 13:51:53,022 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:51:53,023 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:51:53,027 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:51:53,028 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:51:53,028 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:51:53,028 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:51:53,028 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:51:53,028 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:51:53,029 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:51:53,029 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:51:53,030 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:51:53,030 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:51:53,031 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:51:53,031 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:51:53,031 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:51:53,031 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:51:53,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:51:53,032 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:51:53,032 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:51:53,032 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:51:53,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:51:53,033 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:51:53,033 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:51:53,033 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:51:53,033 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:51:53,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:51:53,034 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:51:53,034 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:51:53,034 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:51:53,423 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:51:53,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:51:53,453 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:51:53,454 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:51:53,455 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:51:53,456 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res1of.c [2021-02-23 13:51:53,537 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fea8c177/94b0bcba125e4130a2e78467a2f7a6c8/FLAGfa17556ce [2021-02-23 13:51:54,215 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:51:54,216 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/res1of.c [2021-02-23 13:51:54,223 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fea8c177/94b0bcba125e4130a2e78467a2f7a6c8/FLAGfa17556ce [2021-02-23 13:51:54,555 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fea8c177/94b0bcba125e4130a2e78467a2f7a6c8 [2021-02-23 13:51:54,558 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:51:54,571 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:51:54,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:51:54,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:51:54,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:51:54,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:51:54" (1/1) ... [2021-02-23 13:51:54,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18de2ea1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:54, skipping insertion in model container [2021-02-23 13:51:54,580 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:51:54" (1/1) ... [2021-02-23 13:51:54,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:51:54,609 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:51:54,826 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/res1of.c[589,602] [2021-02-23 13:51:54,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:51:54,857 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:51:54,872 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/res1of.c[589,602] [2021-02-23 13:51:54,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:51:54,900 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:51:54,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:54 WrapperNode [2021-02-23 13:51:54,901 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:51:54,902 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:51:54,902 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:51:54,902 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:51:54,920 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:54" (1/1) ... [2021-02-23 13:51:54,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:54" (1/1) ... [2021-02-23 13:51:54,929 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:54" (1/1) ... [2021-02-23 13:51:54,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:54" (1/1) ... [2021-02-23 13:51:54,939 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:54" (1/1) ... [2021-02-23 13:51:54,945 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:54" (1/1) ... [2021-02-23 13:51:54,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:54" (1/1) ... [2021-02-23 13:51:54,950 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:51:54,951 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:51:54,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:51:54,952 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:51:54,953 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:54" (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 13:51:55,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:51:55,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:51:55,089 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:51:55,089 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 13:51:55,089 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 13:51:55,089 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:51:55,089 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:51:55,089 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:51:55,090 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:51:55,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:51:55,090 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 13:51:55,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 13:51:55,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 13:51:55,090 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 13:51:55,091 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:51:55,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 13:51:55,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:51:55,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:51:55,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:51:55,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:51:55,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:51:55,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:51:55,435 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:51:55,435 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-23 13:51:55,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:51:55 BoogieIcfgContainer [2021-02-23 13:51:55,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:51:55,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:51:55,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:51:55,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:51:55,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:51:54" (1/3) ... [2021-02-23 13:51:55,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f081eb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:51:55, skipping insertion in model container [2021-02-23 13:51:55,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:54" (2/3) ... [2021-02-23 13:51:55,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f081eb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:51:55, skipping insertion in model container [2021-02-23 13:51:55,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:51:55" (3/3) ... [2021-02-23 13:51:55,464 INFO L111 eAbstractionObserver]: Analyzing ICFG res1of.c [2021-02-23 13:51:55,480 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:51:55,492 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:51:55,547 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:51:55,611 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:51:55,611 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:51:55,611 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:51:55,611 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:51:55,612 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:51:55,612 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:51:55,612 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:51:55,612 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:51:55,634 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2021-02-23 13:51:55,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-02-23 13:51:55,642 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:51:55,643 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] [2021-02-23 13:51:55,643 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:51:55,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:51:55,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1106110167, now seen corresponding path program 1 times [2021-02-23 13:51:55,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:51:55,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625243810] [2021-02-23 13:51:55,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:51:55,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:55,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:55,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:55,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:55,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:55,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:51:55,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:55,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:55,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:55,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-23 13:51:55,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:55,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:55,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:55,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:55,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:55,967 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 13:51:55,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625243810] [2021-02-23 13:51:55,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:51:55,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 13:51:55,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796724840] [2021-02-23 13:51:55,976 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 13:51:55,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:51:55,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 13:51:55,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 13:51:55,995 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2021-02-23 13:51:56,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:51:56,119 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2021-02-23 13:51:56,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 13:51:56,121 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2021-02-23 13:51:56,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:51:56,132 INFO L225 Difference]: With dead ends: 64 [2021-02-23 13:51:56,132 INFO L226 Difference]: Without dead ends: 30 [2021-02-23 13:51:56,137 INFO L677 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 [2021-02-23 13:51:56,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-02-23 13:51:56,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-02-23 13:51:56,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-02-23 13:51:56,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-02-23 13:51:56,187 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 25 [2021-02-23 13:51:56,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:51:56,188 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-02-23 13:51:56,188 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 13:51:56,188 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-02-23 13:51:56,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-02-23 13:51:56,190 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:51:56,190 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] [2021-02-23 13:51:56,190 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:51:56,191 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:51:56,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:51:56,192 INFO L82 PathProgramCache]: Analyzing trace with hash 85041813, now seen corresponding path program 1 times [2021-02-23 13:51:56,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:51:56,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562389244] [2021-02-23 13:51:56,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:51:56,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:56,339 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:56,341 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:56,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:56,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:51:56,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:56,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:51:56,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:56,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:56,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:51:56,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:56,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:56,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:56,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-23 13:51:56,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:56,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:56,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:56,491 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 13:51:56,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562389244] [2021-02-23 13:51:56,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:51:56,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 13:51:56,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328086803] [2021-02-23 13:51:56,499 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 13:51:56,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:51:56,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 13:51:56,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-23 13:51:56,500 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 5 states. [2021-02-23 13:51:56,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:51:56,683 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2021-02-23 13:51:56,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 13:51:56,683 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2021-02-23 13:51:56,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:51:56,685 INFO L225 Difference]: With dead ends: 53 [2021-02-23 13:51:56,685 INFO L226 Difference]: Without dead ends: 38 [2021-02-23 13:51:56,686 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 13:51:56,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-02-23 13:51:56,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2021-02-23 13:51:56,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-02-23 13:51:56,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2021-02-23 13:51:56,699 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 25 [2021-02-23 13:51:56,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:51:56,699 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2021-02-23 13:51:56,700 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 13:51:56,700 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2021-02-23 13:51:56,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-02-23 13:51:56,701 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:51:56,701 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:51:56,702 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 13:51:56,702 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:51:56,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:51:56,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1689002269, now seen corresponding path program 1 times [2021-02-23 13:51:56,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:51:56,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845081042] [2021-02-23 13:51:56,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:51:56,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:51:56,771 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:51:56,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:51:56,815 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:51:56,864 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-23 13:51:56,864 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 13:51:56,864 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 13:51:56,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:51:56 BoogieIcfgContainer [2021-02-23 13:51:56,937 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:51:56,939 INFO L168 Benchmark]: Toolchain (without parser) took 2377.59 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 106.1 MB in the beginning and 123.7 MB in the end (delta: -17.6 MB). Peak memory consumption was 13.4 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:56,939 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 122.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:51:56,940 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.22 ms. Allocated memory is still 151.0 MB. Free memory was 104.9 MB in the beginning and 127.0 MB in the end (delta: -22.0 MB). Peak memory consumption was 8.3 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:56,941 INFO L168 Benchmark]: Boogie Preprocessor took 48.27 ms. Allocated memory is still 151.0 MB. Free memory was 127.0 MB in the beginning and 125.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:56,942 INFO L168 Benchmark]: RCFGBuilder took 489.98 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 117.3 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:56,943 INFO L168 Benchmark]: TraceAbstraction took 1493.90 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 116.9 MB in the beginning and 123.7 MB in the end (delta: -6.8 MB). Peak memory consumption was 24.4 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:56,947 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 122.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 328.22 ms. Allocated memory is still 151.0 MB. Free memory was 104.9 MB in the beginning and 127.0 MB in the end (delta: -22.0 MB). Peak memory consumption was 8.3 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 48.27 ms. Allocated memory is still 151.0 MB. Free memory was 127.0 MB in the beginning and 125.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 489.98 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 117.3 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1493.90 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 116.9 MB in the beginning and 123.7 MB in the end (delta: -6.8 MB). Peak memory consumption was 24.4 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); [L30] int *b = malloc(sizeof(int)*N); [L32] sum[0] = 0 [L33] i=0 VAL [\old(N)=0, a={-1:0}, b={-2:0}, i=0, malloc(sizeof(int)*N)={-1:0}, malloc(sizeof(int)*N)={-2:0}, N=1, sum={3:0}] [L33] COND TRUE i