/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/modpf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-19 17:58:12,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-19 17:58:12,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-19 17:58:12,987 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-19 17:58:12,988 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-19 17:58:12,992 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-19 17:58:12,995 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-19 17:58:13,003 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-19 17:58:13,006 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-19 17:58:13,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-19 17:58:13,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-19 17:58:13,016 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-19 17:58:13,017 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-19 17:58:13,020 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-19 17:58:13,022 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-19 17:58:13,024 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-19 17:58:13,028 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-19 17:58:13,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-19 17:58:13,036 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-19 17:58:13,044 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-19 17:58:13,046 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-19 17:58:13,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-19 17:58:13,049 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-19 17:58:13,052 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-19 17:58:13,062 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-19 17:58:13,106 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-19 17:58:13,107 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-19 17:58:13,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-19 17:58:13,114 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 17:58:13,170 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-19 17:58:13,171 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-19 17:58:13,176 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-19 17:58:13,176 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-19 17:58:13,177 INFO L138 SettingsManager]: * Use SBE=true [2021-02-19 17:58:13,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-19 17:58:13,177 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-19 17:58:13,178 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-19 17:58:13,178 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-19 17:58:13,179 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-19 17:58:13,180 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-19 17:58:13,180 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-19 17:58:13,180 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-19 17:58:13,181 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-19 17:58:13,181 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-19 17:58:13,181 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-19 17:58:13,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-19 17:58:13,182 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-19 17:58:13,182 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-19 17:58:13,183 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-19 17:58:13,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 17:58:13,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-19 17:58:13,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-19 17:58:13,184 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-19 17:58:13,185 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-19 17:58:13,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-19 17:58:13,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-19 17:58:13,185 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-19 17:58:13,186 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-19 17:58:13,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-19 17:58:13,661 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-19 17:58:13,664 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-19 17:58:13,666 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-19 17:58:13,666 INFO L275 PluginConnector]: CDTParser initialized [2021-02-19 17:58:13,667 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/modpf.c [2021-02-19 17:58:13,750 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b7daa998/dc84a907c6094dacb57ff212011b0942/FLAG88a57030c [2021-02-19 17:58:14,329 INFO L306 CDTParser]: Found 1 translation units. [2021-02-19 17:58:14,330 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/modpf.c [2021-02-19 17:58:14,337 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b7daa998/dc84a907c6094dacb57ff212011b0942/FLAG88a57030c [2021-02-19 17:58:14,689 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b7daa998/dc84a907c6094dacb57ff212011b0942 [2021-02-19 17:58:14,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-19 17:58:14,707 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-19 17:58:14,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-19 17:58:14,709 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-19 17:58:14,713 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-19 17:58:14,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:58:14" (1/1) ... [2021-02-19 17:58:14,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f16d998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:14, skipping insertion in model container [2021-02-19 17:58:14,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:58:14" (1/1) ... [2021-02-19 17:58:14,725 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-19 17:58:14,741 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-19 17:58:14,895 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/modpf.c[588,601] [2021-02-19 17:58:14,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:58:14,926 INFO L203 MainTranslator]: Completed pre-run [2021-02-19 17:58:14,942 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/modpf.c[588,601] [2021-02-19 17:58:14,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:58:14,971 INFO L208 MainTranslator]: Completed translation [2021-02-19 17:58:14,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:14 WrapperNode [2021-02-19 17:58:14,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-19 17:58:14,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-19 17:58:14,974 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-19 17:58:14,974 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-19 17:58:14,989 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:14" (1/1) ... [2021-02-19 17:58:14,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:14" (1/1) ... [2021-02-19 17:58:15,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:14" (1/1) ... [2021-02-19 17:58:15,000 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:14" (1/1) ... [2021-02-19 17:58:15,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:14" (1/1) ... [2021-02-19 17:58:15,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:14" (1/1) ... [2021-02-19 17:58:15,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:14" (1/1) ... [2021-02-19 17:58:15,021 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-19 17:58:15,022 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-19 17:58:15,022 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-19 17:58:15,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-19 17:58:15,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:14" (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 17:58:15,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-19 17:58:15,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-19 17:58:15,145 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-19 17:58:15,145 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-19 17:58:15,145 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-19 17:58:15,145 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-19 17:58:15,146 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-19 17:58:15,146 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-19 17:58:15,147 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-19 17:58:15,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-19 17:58:15,148 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-19 17:58:15,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-19 17:58:15,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-19 17:58:15,149 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-19 17:58:15,151 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-19 17:58:15,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-19 17:58:15,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-19 17:58:15,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-19 17:58:15,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-19 17:58:15,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-19 17:58:15,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-19 17:58:15,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-19 17:58:15,768 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-19 17:58:15,769 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-19 17:58:15,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:58:15 BoogieIcfgContainer [2021-02-19 17:58:15,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-19 17:58:15,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-19 17:58:15,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-19 17:58:15,779 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-19 17:58:15,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 05:58:14" (1/3) ... [2021-02-19 17:58:15,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1106d9af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:58:15, skipping insertion in model container [2021-02-19 17:58:15,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:14" (2/3) ... [2021-02-19 17:58:15,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1106d9af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:58:15, skipping insertion in model container [2021-02-19 17:58:15,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:58:15" (3/3) ... [2021-02-19 17:58:15,784 INFO L111 eAbstractionObserver]: Analyzing ICFG modpf.c [2021-02-19 17:58:15,795 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-19 17:58:15,800 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-19 17:58:15,826 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-19 17:58:15,870 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-19 17:58:15,870 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-19 17:58:15,871 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-19 17:58:15,871 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-19 17:58:15,871 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-19 17:58:15,871 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-19 17:58:15,871 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-19 17:58:15,872 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-19 17:58:15,901 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2021-02-19 17:58:15,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-19 17:58:15,908 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:58:15,909 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 17:58:15,910 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:58:15,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:58:15,919 INFO L82 PathProgramCache]: Analyzing trace with hash 199879945, now seen corresponding path program 1 times [2021-02-19 17:58:15,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:58:15,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963783411] [2021-02-19 17:58:15,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:58:16,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:16,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,228 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:58:16,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:16,377 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-19 17:58:16,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:16,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,407 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 17:58:16,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963783411] [2021-02-19 17:58:16,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:58:16,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-19 17:58:16,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956069549] [2021-02-19 17:58:16,419 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-19 17:58:16,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:58:16,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-19 17:58:16,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-19 17:58:16,439 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2021-02-19 17:58:16,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:58:16,547 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2021-02-19 17:58:16,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-19 17:58:16,549 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2021-02-19 17:58:16,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:58:16,557 INFO L225 Difference]: With dead ends: 58 [2021-02-19 17:58:16,558 INFO L226 Difference]: Without dead ends: 29 [2021-02-19 17:58:16,561 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 17:58:16,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-02-19 17:58:16,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-02-19 17:58:16,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-02-19 17:58:16,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2021-02-19 17:58:16,604 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2021-02-19 17:58:16,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:58:16,604 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2021-02-19 17:58:16,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-19 17:58:16,605 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2021-02-19 17:58:16,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-19 17:58:16,606 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:58:16,606 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 17:58:16,606 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-19 17:58:16,606 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:58:16,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:58:16,607 INFO L82 PathProgramCache]: Analyzing trace with hash -386926069, now seen corresponding path program 1 times [2021-02-19 17:58:16,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:58:16,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772434786] [2021-02-19 17:58:16,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:58:16,632 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-02-19 17:58:16,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1455943424] [2021-02-19 17:58:16,633 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 17:58:16,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:16,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2021-02-19 17:58:16,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 17:58:16,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,740 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,745 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,752 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,753 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,754 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,759 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,760 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,760 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,765 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,766 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,766 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,768 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,769 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,770 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-19 17:58:16,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-19 17:58:16,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-19 17:58:16,779 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-19 17:58:16,784 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:58:16,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:58:16,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:58:16,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,789 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:58:16,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:58:16,792 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,793 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:58:16,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:58:16,795 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,796 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:58:16,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,797 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:58:16,798 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,799 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:58:16,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,800 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:58:16,801 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:58:16,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:58:16,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:58:16,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:58:16,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:58:16,819 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:58:16,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:58:16,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:58:16,829 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,833 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:58:16,847 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 17:58:16,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 17:58:16,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 17:58:16,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 17:58:16,907 WARN L141 QuantifierPusher]: treesize reduction 1, result has 90.9 percent of original size [2021-02-19 17:58:16,911 WARN L147 QuantifierPusher]: treesize reduction 1, result has 90.9 percent of original size 10 [2021-02-19 17:58:16,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-19 17:58:16,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-19 17:58:16,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-19 17:58:16,955 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-19 17:58:16,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,982 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,983 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,984 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,986 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,987 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,988 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,989 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,990 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,990 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,991 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,997 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:17,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:17,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:17,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:17,002 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:17,003 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:17,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:17,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:17,005 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:17,006 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:17,008 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 17:58:17,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772434786] [2021-02-19 17:58:17,009 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-02-19 17:58:17,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455943424] [2021-02-19 17:58:17,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:58:17,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-19 17:58:17,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904621490] [2021-02-19 17:58:17,012 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-19 17:58:17,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:58:17,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-19 17:58:17,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-02-19 17:58:17,014 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 4 states. [2021-02-19 17:58:17,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:58:17,095 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2021-02-19 17:58:17,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-19 17:58:17,096 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2021-02-19 17:58:17,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:58:17,099 INFO L225 Difference]: With dead ends: 51 [2021-02-19 17:58:17,099 INFO L226 Difference]: Without dead ends: 37 [2021-02-19 17:58:17,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-02-19 17:58:17,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-02-19 17:58:17,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2021-02-19 17:58:17,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-02-19 17:58:17,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2021-02-19 17:58:17,116 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 22 [2021-02-19 17:58:17,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:58:17,117 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2021-02-19 17:58:17,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-19 17:58:17,117 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2021-02-19 17:58:17,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-19 17:58:17,119 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:58:17,119 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] [2021-02-19 17:58:17,333 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-02-19 17:58:17,334 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:58:17,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:58:17,336 INFO L82 PathProgramCache]: Analyzing trace with hash -292108345, now seen corresponding path program 1 times [2021-02-19 17:58:17,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:58:17,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028788685] [2021-02-19 17:58:17,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:58:17,380 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-02-19 17:58:17,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1315361041] [2021-02-19 17:58:17,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 17:58:17,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:58:17,496 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:58:17,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:58:17,525 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:58:17,585 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-19 17:58:17,586 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-19 17:58:17,795 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 17:58:17,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.02 05:58:17 BoogieIcfgContainer [2021-02-19 17:58:17,842 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-19 17:58:17,843 INFO L168 Benchmark]: Toolchain (without parser) took 3148.09 ms. Allocated memory is still 152.0 MB. Free memory was 128.2 MB in the beginning and 123.8 MB in the end (delta: 4.4 MB). Peak memory consumption was 5.6 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:17,844 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 152.0 MB. Free memory is still 126.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-19 17:58:17,844 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.66 ms. Allocated memory is still 152.0 MB. Free memory was 127.1 MB in the beginning and 116.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:17,845 INFO L168 Benchmark]: Boogie Preprocessor took 47.96 ms. Allocated memory is still 152.0 MB. Free memory was 116.8 MB in the beginning and 115.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:17,846 INFO L168 Benchmark]: RCFGBuilder took 748.87 ms. Allocated memory is still 152.0 MB. Free memory was 115.0 MB in the beginning and 132.6 MB in the end (delta: -17.6 MB). Peak memory consumption was 16.7 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:17,847 INFO L168 Benchmark]: TraceAbstraction took 2067.52 ms. Allocated memory is still 152.0 MB. Free memory was 132.6 MB in the beginning and 123.8 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:17,850 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 152.0 MB. Free memory is still 126.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 263.66 ms. Allocated memory is still 152.0 MB. Free memory was 127.1 MB in the beginning and 116.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 47.96 ms. Allocated memory is still 152.0 MB. Free memory was 116.8 MB in the beginning and 115.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 748.87 ms. Allocated memory is still 152.0 MB. Free memory was 115.0 MB in the beginning and 132.6 MB in the end (delta: -17.6 MB). Peak memory consumption was 16.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2067.52 ms. Allocated memory is still 152.0 MB. Free memory was 132.6 MB in the beginning and 123.8 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 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)=10, 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] int sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 0 [L32] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={5:0}] [L32] COND TRUE i