/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/nsqmf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-19 17:58:19,992 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-19 17:58:19,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-19 17:58:20,032 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-19 17:58:20,033 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-19 17:58:20,035 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-19 17:58:20,037 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-19 17:58:20,039 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-19 17:58:20,064 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-19 17:58:20,068 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-19 17:58:20,070 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-19 17:58:20,075 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-19 17:58:20,075 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-19 17:58:20,077 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-19 17:58:20,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-19 17:58:20,095 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-19 17:58:20,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-19 17:58:20,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-19 17:58:20,103 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-19 17:58:20,111 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-19 17:58:20,113 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-19 17:58:20,118 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-19 17:58:20,121 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-19 17:58:20,122 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-19 17:58:20,132 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-19 17:58:20,147 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-19 17:58:20,148 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-19 17:58:20,149 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-19 17:58:20,150 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 [2021-02-19 17:58:20,201 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-19 17:58:20,201 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-19 17:58:20,203 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-19 17:58:20,203 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-19 17:58:20,203 INFO L138 SettingsManager]: * Use SBE=true [2021-02-19 17:58:20,204 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-19 17:58:20,204 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-19 17:58:20,204 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-19 17:58:20,204 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-19 17:58:20,205 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-19 17:58:20,205 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-19 17:58:20,205 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-19 17:58:20,205 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-19 17:58:20,206 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-19 17:58:20,206 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-19 17:58:20,206 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-19 17:58:20,206 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-19 17:58:20,206 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-19 17:58:20,207 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-19 17:58:20,207 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-19 17:58:20,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 17:58:20,208 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-19 17:58:20,208 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-19 17:58:20,208 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-19 17:58:20,208 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-19 17:58:20,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-19 17:58:20,209 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-19 17:58:20,209 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-19 17:58:20,209 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-19 17:58:20,651 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-19 17:58:20,680 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-19 17:58:20,683 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-19 17:58:20,685 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-19 17:58:20,686 INFO L275 PluginConnector]: CDTParser initialized [2021-02-19 17:58:20,686 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/nsqmf.c [2021-02-19 17:58:20,781 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d18e3768/1634008f9d294bfbb0dd8cb18fb5ebbd/FLAGdae37fbd9 [2021-02-19 17:58:21,288 INFO L306 CDTParser]: Found 1 translation units. [2021-02-19 17:58:21,289 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/nsqmf.c [2021-02-19 17:58:21,297 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d18e3768/1634008f9d294bfbb0dd8cb18fb5ebbd/FLAGdae37fbd9 [2021-02-19 17:58:21,669 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d18e3768/1634008f9d294bfbb0dd8cb18fb5ebbd [2021-02-19 17:58:21,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-19 17:58:21,690 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-19 17:58:21,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-19 17:58:21,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-19 17:58:21,698 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-19 17:58:21,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:58:21" (1/1) ... [2021-02-19 17:58:21,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45e8413a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:21, skipping insertion in model container [2021-02-19 17:58:21,703 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:58:21" (1/1) ... [2021-02-19 17:58:21,713 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-19 17:58:21,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-19 17:58:21,977 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/nsqmf.c[588,601] [2021-02-19 17:58:22,007 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:58:22,018 INFO L203 MainTranslator]: Completed pre-run [2021-02-19 17:58:22,035 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/nsqmf.c[588,601] [2021-02-19 17:58:22,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:58:22,081 INFO L208 MainTranslator]: Completed translation [2021-02-19 17:58:22,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:22 WrapperNode [2021-02-19 17:58:22,081 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-19 17:58:22,083 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-19 17:58:22,083 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-19 17:58:22,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-19 17:58:22,099 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:22" (1/1) ... [2021-02-19 17:58:22,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:22" (1/1) ... [2021-02-19 17:58:22,128 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:22" (1/1) ... [2021-02-19 17:58:22,129 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:22" (1/1) ... [2021-02-19 17:58:22,149 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:22" (1/1) ... [2021-02-19 17:58:22,158 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:22" (1/1) ... [2021-02-19 17:58:22,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:22" (1/1) ... [2021-02-19 17:58:22,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-19 17:58:22,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-19 17:58:22,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-19 17:58:22,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-19 17:58:22,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:22" (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 [2021-02-19 17:58:22,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-19 17:58:22,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-19 17:58:22,310 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-19 17:58:22,310 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-19 17:58:22,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-19 17:58:22,311 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-19 17:58:22,311 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-19 17:58:22,311 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-19 17:58:22,312 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-19 17:58:22,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-19 17:58:22,312 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-19 17:58:22,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-19 17:58:22,314 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-19 17:58:22,314 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-19 17:58:22,315 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-19 17:58:22,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-19 17:58:22,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-19 17:58:22,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-19 17:58:22,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-19 17:58:22,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-19 17:58:22,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-19 17:58:22,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-19 17:58:22,724 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-19 17:58:22,725 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-19 17:58:22,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:58:22 BoogieIcfgContainer [2021-02-19 17:58:22,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-19 17:58:22,729 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-19 17:58:22,729 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-19 17:58:22,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-19 17:58:22,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 05:58:21" (1/3) ... [2021-02-19 17:58:22,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c4a9fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:58:22, skipping insertion in model container [2021-02-19 17:58:22,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:22" (2/3) ... [2021-02-19 17:58:22,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c4a9fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:58:22, skipping insertion in model container [2021-02-19 17:58:22,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:58:22" (3/3) ... [2021-02-19 17:58:22,737 INFO L111 eAbstractionObserver]: Analyzing ICFG nsqmf.c [2021-02-19 17:58:22,745 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-19 17:58:22,753 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-19 17:58:22,779 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-19 17:58:22,806 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-19 17:58:22,806 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-19 17:58:22,806 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-19 17:58:22,807 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-19 17:58:22,807 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-19 17:58:22,807 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-19 17:58:22,807 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-19 17:58:22,807 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-19 17:58:22,825 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2021-02-19 17:58:22,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-19 17:58:22,832 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:58:22,832 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] [2021-02-19 17:58:22,833 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:58:22,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:58:22,840 INFO L82 PathProgramCache]: Analyzing trace with hash 199879945, now seen corresponding path program 1 times [2021-02-19 17:58:22,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:58:22,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982158972] [2021-02-19 17:58:22,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:58:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:23,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:23,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:23,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:23,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:23,273 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-02-19 17:58:23,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:58:23,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:23,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:23,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:23,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-19 17:58:23,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:23,339 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:23,340 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:23,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:23,342 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:23,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:58:23,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982158972] [2021-02-19 17:58:23,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:58:23,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-19 17:58:23,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150133280] [2021-02-19 17:58:23,355 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-19 17:58:23,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:58:23,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-19 17:58:23,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-19 17:58:23,374 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2021-02-19 17:58:23,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:58:23,518 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2021-02-19 17:58:23,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-19 17:58:23,521 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2021-02-19 17:58:23,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:58:23,530 INFO L225 Difference]: With dead ends: 58 [2021-02-19 17:58:23,530 INFO L226 Difference]: Without dead ends: 29 [2021-02-19 17:58:23,534 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 [2021-02-19 17:58:23,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-02-19 17:58:23,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-02-19 17:58:23,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-02-19 17:58:23,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2021-02-19 17:58:23,581 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2021-02-19 17:58:23,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:58:23,582 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2021-02-19 17:58:23,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-19 17:58:23,582 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2021-02-19 17:58:23,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-19 17:58:23,583 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:58:23,583 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] [2021-02-19 17:58:23,584 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-19 17:58:23,584 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:58:23,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:58:23,585 INFO L82 PathProgramCache]: Analyzing trace with hash -386926069, now seen corresponding path program 1 times [2021-02-19 17:58:23,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:58:23,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364725578] [2021-02-19 17:58:23,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:58:23,609 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-02-19 17:58:23,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [621629151] [2021-02-19 17:58:23,610 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 [2021-02-19 17:58:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:58:23,792 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:58:23,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:58:23,832 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:58:23,887 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-19 17:58:23,888 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-19 17:58:24,103 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-02-19 17:58:24,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.02 05:58:24 BoogieIcfgContainer [2021-02-19 17:58:24,148 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-19 17:58:24,150 INFO L168 Benchmark]: Toolchain (without parser) took 2471.26 ms. Allocated memory was 161.5 MB in the beginning and 196.1 MB in the end (delta: 34.6 MB). Free memory was 116.2 MB in the beginning and 167.2 MB in the end (delta: -51.0 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-19 17:58:24,151 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 161.5 MB. Free memory is still 133.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-19 17:58:24,152 INFO L168 Benchmark]: CACSL2BoogieTranslator took 387.94 ms. Allocated memory is still 161.5 MB. Free memory was 115.1 MB in the beginning and 137.6 MB in the end (delta: -22.5 MB). Peak memory consumption was 8.1 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:24,153 INFO L168 Benchmark]: Boogie Preprocessor took 98.67 ms. Allocated memory is still 161.5 MB. Free memory was 137.6 MB in the beginning and 144.5 MB in the end (delta: -6.8 MB). Peak memory consumption was 3.7 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:24,153 INFO L168 Benchmark]: RCFGBuilder took 545.44 ms. Allocated memory is still 161.5 MB. Free memory was 144.5 MB in the beginning and 127.7 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:24,154 INFO L168 Benchmark]: TraceAbstraction took 1418.97 ms. Allocated memory was 161.5 MB in the beginning and 196.1 MB in the end (delta: 34.6 MB). Free memory was 127.4 MB in the beginning and 167.2 MB in the end (delta: -39.8 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-19 17:58:24,164 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 161.5 MB. Free memory is still 133.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 387.94 ms. Allocated memory is still 161.5 MB. Free memory was 115.1 MB in the beginning and 137.6 MB in the end (delta: -22.5 MB). Peak memory consumption was 8.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 98.67 ms. Allocated memory is still 161.5 MB. Free memory was 137.6 MB in the beginning and 144.5 MB in the end (delta: -6.8 MB). Peak memory consumption was 3.7 MB. Max. memory is 8.0 GB. * RCFGBuilder took 545.44 ms. Allocated memory is still 161.5 MB. Free memory was 144.5 MB in the beginning and 127.7 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1418.97 ms. Allocated memory was 161.5 MB in the beginning and 196.1 MB in the end (delta: 34.6 MB). Free memory was 127.4 MB in the beginning and 167.2 MB in the end (delta: -39.8 MB). There was no memory consumed. 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)=15, 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 *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L31] b[0] = 1 [L32] a[0] = 1 [L34] i=1 VAL [\old(N)=0, a={-2:0}, b={-1:0}, i=1, malloc(sizeof(long long)*N)={-2:0}, malloc(sizeof(long long)*N)={-1:0}, N=1] [L34] COND FALSE !(i